Think people will walk away if I have an argument

Basically if I get angry which is rarely I end up feeling pretty guilty about the situation and feel I need to fix it as soon as possible. It's a little annoying for myself it's like I'm unsure if I should be angry in the first place, or like mixed thoughts that the person will just disappear. It happened that the past week my housemate has finished university but I carry on until September and so he's bored. From it he seemed to have annoy me sessions everyday where he'd bug me for 30 minutes by meowing constantly, poking, tickling, jabbing or trying to force me to eat vegan food. I eventually broke and got pissed off. I've text him a little about it explaining my side and that I can see the fun in it for only so long, for two days he's pretty much been silent and won't talk to me (working with him as well). Not really sure what to do about it.. I feel guilty for getting angry. And it's happened again where I have that kinda thought that if I don't solve this ASAP hes gonna **** off or something..

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