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

It's been almost 2 years since I talked to my ex.

We met at a party through some mutual friends and hit it off immediately. We lived 40 mins apart (2 different colleges) and saw each other almost every weekend for 6 months. He always had trouble putting a label on us or making anything "official" but we were emotionally and sexually exclusive. He "broke up" with me right before my senior year started and I (being the intense, social anxiety-stricken person I am) stopped talking to him completely and fell to pieces for a few months. I saw a few guys for weeks at a time, but nothing stuck. Then, the second semester of my senior year I met my current [21/M] SO and we have been going strong for a year and a half now. We live together and are almost surely going to get married in the future. I love him to pieces and would never even think of cheating on him.

A month or so ago, my ex started "liking" a lot of the things I posted on FB, and even commented on a couple. It sounds stupid, but it really caught me off guard. We haven't had any sort of contact in person, online, or by phone in 2 years. I know he broke up with his girlfriend a couple months ago, which is why I was a little cautious about it. Recently, I have been thinking a lot about how much I liked him as a person, even beyond the sexual/relationship stuff. I'm starting to realize that he was a good friend and I let that get away because of my own social problems. I am having this urge to reconnect with him on a friendship level, with no intentions of going past that. I just want to talk, catch up, and rekindle our friendship.

My boyfriend knows about how he has been following me on FB, and doesn't really like it, but he's not furious or anything. We trust each other, and he knows I would never do anything unfaithful. He's more just annoyed. Is it possible for me to build this friendship without A) My ex thinking I want to get back together with him and B) Making my boyfriend uncomfortable?
<bot>: In a strong and happy relationship, but want to become friends with my ex again after not talking to him for 2 years without making my boyfriend mad or giving my ex the wrong idea.