Ive been with my girlfriend 3 years and throughout that time shes had her younger brother pass just after we met and her mum pass away back in june so basically from the start ive been supporting her through all of her grieving. The last couple of weeks ive noticed that she has become quite distant with me and whilst on holiday last week i told her how i felt, and she said that she still loved me and there was no need to worry. The thing is, over the past few months she has been very friendly with a guy she works with.. and on a number of occassions she was going and spending time with just them two, and had spent the night drinking with him and stayed in his flat "and this was after an arguement between us", but wasnt the first time she has stayed at his flat. She says they are just friends and they really click as he has lost his dad, so they can speak easily. I cant help the way i feel and i told her that it makes me feel really uncomfortable them hanging out this way, and would prefer if the just remained friends at work. his reaction to this news was "that he was going to miss her". They are still speaking to each othr privately through social media and when i asked to see a snap he had sent her last night, she wouldnt show me as she was afraid of what he had wrote in it. This ended in an arguement with her admitting to me that she had been feeling distant the last while and basically had to lie to me when i brought it up because she didnt want to ruin the holiday. She said she isnt unhappy in the relationship but isnt happy either. She said that she feels like she has to try to much with me and it should just come natural, i.e affection etc. We talked how it may be her grief making her feel this way and she says she doesnt know, and was crying telling me she really doesnt want to hurt me. This morning she appoligised for lying to me about how she feels and give me a hug. After me saying that im uncomfortable them speaking and the fact shes hiding stuff and lying, i no longer trust her or can believe anything she says. She says theyre just friends and she doesnt look at him in a romantic way but i just dont believe it. Ive had the same thing happen to me in my last relationship so its obviously maken me even more insecure..but i know when i feel like someones drifting away from me and its definitly happening again. I love her, i do everything for her and wish all this wasnt happening but unfortunitly it is. I just need a bit of clarity from someone on how they think i should move forward from now.??