run or give it a shot

Soooo I'm very possessive and I am. A jealous person but to an extent not anything crazy like you can't go too the mall or the gym or something like that. But I've been with my boyfriend for a few months now and I texted him today while I was at the gym and I told him I was at the gym then he just started giving me attitude and was mad or jealous or whatever because I was at the gym. I've been in controlling relationships before he's very sweet and respectful towards me but how would you ladies take this and what would you do? He's not doing it anymore but I know things like this just get worse in the end.