boyfriend not interested in me?

hi all! two month relationship here. me and bf (23/25) met at work and still work together, we started dating three months into knowing each other properly, and it was amazing. the first few weeks we tried to act normal at work to hide it while still flirting, and we met up outside of work on dates!
past month however, we are on opposite shifts and he keeps cancelling plans we make together outside of work. He says he is tired/stressed about things he cant say, and Im worried about it. I am worried about him, i tell him he can confide anything in me and i just want to chill with him to forget his stresses, but would that mean five times now he has cancelled (fairly last minute too) on things we plan.
I feel like im not a priority to him, and I might even add to his stress. Im always the one arranging dates too, he never asks me to go on dates even when he is free.
Its weird because now people at work know they told me they could tell he liked me before we started dating. he always came to me out of his way at work to talk, he started the big convos, he confessed first, he kissed first, he got sexual first. but now im asking for more time with him (I really miss him a lot and just want time together outside work because work isnt the place for flirting!) and hes just denying me. Again, i feel really guilty because he does say hes tired and stressed, but that affects him to the point he doesnt want to meet up with his new girlfriend?
I literally go out of my way for him, Ive come an hour away on my days off to meet him after work just to get time together, and i feel like he doesnt want the same.
Help?? i really love him but i dont want to keep feeling guilty for wanting to meet up and then feeling hurt when he cancels for what could be totally valid reasons...

Aww, I feel for you and sorry to hear this. Look, my guess is that there is something causing him severe stress, maybe depression even. What that is is hard to guess, but could be anything such as afraid losing job, drugs, something he has done and regrets doing, could be anything. I would write him a message saying you love him and worry about him and asking whether you can talk about things one evening ?. Don't get too distraught, if things were intended then they will work out in the end. Best can do is make sure he knows you love him and are there for him, and ask him to come and see you (make it that way around) . Just stay positive and focused.

Update: thank you for the responses. I dont want to be too negative (aka just break up with him and move on), he said theres home stuff going on and he just needs his days off work to himself. we only see each other at work like once a week now and obviously its not romantic at work though we kiss/hug whenever one of us finishes/starts. but our workplace is stressful so we dont really get chance to chat, which is why i was so insistent to him about meeting up.
Im hoping that in a months time his issues are sorted and we can go back to normal and ill be a priority. i really worry about his issues but ive told him and he just said to let him deal with it.
i recently got an offer from cambridge uni which starts this october, so im going to start studying in my free time and hope that distracts me. i do think whatever hes got going on is his priority atm. this is the first serious relationship ive been in as an adult so i just worry that only two months in and im starting to feel unimportant to him, but he asked me to trust him so for now thats all i can do. i might update in a month or so. thank you guys.

Update: thank you for the responses. I dont want to be too negative (aka just break up with him and move on), he said theres home stuff going on and he just needs his days off work to himself. we only see each other at work like once a week now and obviously its not romantic at work though we kiss/hug whenever one of us finishes/starts. but our workplace is stressful so we dont really get chance to chat, which is why i was so insistent to him about meeting up.
Im hoping that in a months time his issues are sorted and we can go back to normal and ill be a priority. i really worry about his issues but ive told him and he just said to let him deal with it.
i recently got an offer from cambridge uni which starts this october, so im going to start studying in my free time and hope that distracts me. i do think whatever hes got going on is his priority atm. this is the first serious relationship ive been in as an adult so i just worry that only two months in and im starting to feel unimportant to him, but he asked me to trust him so for now thats all i can do. i might update in a month or so. thank you guys.

Oh and by the way, on the "if it is intended to work it will work". Just to show you that in action, look up out of interest on Google "the full story of the romance between Emannuel Macron and Brigitte Macron (he was school boy she was his teacher) . They had a break for years ,then got back together as they both knew they loved each other despite 40 year age gap, and they look really happy even now many years later. So it shows such breaks do not mean "the end" !!