Would it bother you if your husband was doing this?

[Crys]

So my husband is always going to check up on his ex girlfriends Facebook page. They're not friends on Facebook but i've caught him going to her page all the time. And then the other day we were in the car and he asked me if I thought she was pretty. And I was like "idk, she's not pretty but she's not ugly either." and right away he got defensive and started saying she is really pretty and when they were together she always got compliments on how beautiful she was blah blah blah. Not only that he requested her sister on fb which I found odd since it's not like they're friends but i'm like ok well they do know each other from when he used to date her sister. But then he requested one of her friends which he does not know at all! and he's always telling me she's really pretty just like how he does with his ex gf. I just find it disrespectful. & I think he noticed i got bothered last time and he was like bringing up some guy i dated for a little while before him saying he was ugly and i'm like "ok, that's fine" but mind you I never bring him up, like he brings up his ex gf and how beautiful she is. I just feel like he crosses the line. And the fact that he's always looking at her profile is weird to me. opinions?