I need some help, not sure what is wrong?

I think you're just worrying too much, everyone lies at one point or another & your husband being lying about or loving his ex isn't much of a crime, anyone in a relationship thinks he loves his partner but he realizes he doesn't that's when they break up (& that's what he did, he broke up with her & now he's with you) may be he said so coz he was still in this phase where he doesn't know what the right answer to every question you ask that won't make you ran off...as for the part, then he's obviously lying, all the guys like & I don't think you should make such a fuss about it....stop doubting your husband & making him feel like he's being watched or anything or you might actually lose him....the guy obviously loves you & you have a 10 month old baby to take care of so stop being insecure & just show your husband a little trust.