So, there's an argument. Once it's over you throw it out there that you want to break up, so you haven't said it in the heat of the moment, and your boyfriend's response is to walk away, then to say he's been considering breaks, but he's just dropped that into conversation because you have, and not when he decided it.
None of this is very mature. Instead of your physical 'love language' you both need to work on your communication and honesty. There's no talk about true feelings, there's emotional blackmail. None of these are due to lockdown, it's due to personality. Personally, I've never seen the point in having a break; you are there to love, support and care for each other, not dip in and out when things get a bit difficult. If you go down that route, you both need to talk it over properly and decide on the timescale and boundaries. However, you want to break up, he wants a break, so you aren't on the same page to start with. This is going to take a lot of sorting out and these issues could reoccur later.