Unexpected

Caitlin • 21 • Upper left USA • mommy • Scorpio •
Hi ladies.. So I have a dilemma.. My ex girlfriends ex boyfriend and I, have a thing.. We are talking and hanging out a lot. He's a marine and so he works a lot and sometimes I don't get to see him for two weeks at a time since he's in the wire.. My ex girlfriend is making me feel like shit for even talking to him.. We have real feelings for each other and it's not to get back at our ex girlfriend or to hurt her.. I guess I just want to know, is it wrong that I have feelings for my exes, ex..? 
Picture is of him & I.