<human>: Can you condense the text into a few key points?

We've been in a relationship for 4 months [20F, 20M]and we recently added each other on Facebook (just as friends, no relationship status). Neither of us is really into broadcasting our relationship, so we just kinda added each other out of "eh", not because we wanted to interact online.

Anyway, my curiosity got the better of me and I perused his page one night and saw a ton of messages and pictures of him with his ex. They broke up over a year ago and haven't spoken in over a year because she cheated on him, and none of the posts are recent. It bothers me that he didn't take them down, but Facebook isn't important to him so I assume he just didn't bother. It's just the content that bugged me more anyway. For one, he posted tons of comments about how she's the most beautiful/sexiest/gorgeous girl he's ever seen. He's never said anything like that to me, so I kind of ribbed on him like "I think you traded down!", to which he replied "It's okay" and once he realized how bad that sounded he followed up with "I don't compare you".

There were also "I love you" postings very early into their relationship, where as I'm 4 months in and I occasionally hear "You're cute, I like you" from him. I know this is really petty but how can I get over my jealous streak?
<bot>: Saw my boyfriends interactions with his ex-girlfriend online and I'm jealous because he isn't as affectionate towards me