Leigh Ann H

I feel silly asking this question on here...but you guys seem so helpful!! We have been dating for 2 years this past February, and he has been talking about marriage since only a couple months after we started dating. Now, since maybe a few months ago, that has stopped, and we rarely if ever have sex. He blames it on his busy work schedule, which I understand, but he even uses that as an excuse when he's off! He has recently started hanging out with a girl he hung out with when he was still married a few years ago...and he admitted to "talking" to her to piss his ex wife off...should I be worried? He never even says I Love You or cuddles with me or does ANYTHING at all sweet anymore unless I initiate it...is it time to move on?? Thanks so much guys! I really appreciate all your advice!!