I am in a long distance relationship, we have been together for over 4years ,he travels for his job and he currently left about 4-5months but before that we lived together for 4months, while he's gone his best friend always texts me and asks me to hang out , he's a huge sweet heart and a nice guy, he hasn't made a move on me but he does flirt here and there, I think I'm starting to catch feeling for him but I know that's a big no no, their practically brothers, they grew up together