Is he catching feelings?

Oooo • ; 18
I think he's catching feelings but he's SO jar to understand as sometimes I feel like he hides his emotions , he hides them but I see the little signs of care , fwb btw ! Any suggestions? , We have been having sex for over a year , we ways fight and argue but these past days has been good , he's being all nice which is really weird I don't know maybe it's just me, he does stuff with other girls but when I attempt to do things with other guys he gets jealous , but now he's agreed to do things to only me