I [20F ]have been a bad friend to [20F] and [20M]. I need advice on how to fix it.

I am a ‘20F’ and I have been friends with ‘20F’ let’s call her “Jane” and ‘20M’ let’s call him “Andy” for about a year now. I know it seems short but we all study the same thing in uni and are all part of an exchange program. Ok so we are in 3rd year and I’ve been crushing on the guy for both my 1st and 2nd years of college. At first I tried really hard to ignore it especially because he had a girlfriend. And it was working for the most part. But when we started to get closer as friends there was a lingering feeling. Near the end of our second year I found out that him and his girlfriend split up. I was shocked because they seemed quite serious and she is gorgeous but a little part of me was happy which I feel quite guilty about. I really tried to keep ignoring my feelings but this information made it harder to do so. So, I told May about my feeling eventually and she was in full support. We would talk about whether or not I should confess but I decided not to because Andy just came out of a serious relationship and I don’t wanna ruin our friendship by making him feel uncomfortable. Plus I really value our friendship. Ok now we have travelled for our 3 years abroad and we are settling in. During the summer vacation, May and Andy were working at the same company. All of us hung out a few times but they were together most days for work. Now, I have observed that May and Andy are close but even more close than I remember them being. Like when Andy comes into our dorm room he lays down on May’s bed and at some point she even patted him on the head. I have always thought that May was attractive. Like, she’s prettier, smarter and more intelligent than I am. I tend to struggle with my self image and worth especially because I and on the heavier end of the spectrum. Here’s where I’ve been a terrible friend. I had to shower but Andy was in the room. He was on May’s bed and they were taking. I was not included in the convo so I went to the bathroom to bathe. But then I got the idea to record their convo to see if they were together. And I did. I hate myself for it. I listened to the recording and it was a completely normal convo. I deleted it immediately. I know that I am not entitled to Andy’s feeling and I don’t even think I’m his type because his ex was gorgeous. I don’t wanna ruin our friendship and so I decide not to tell him. And May is so wonderful to be around but my thoughts are constant now cuz she is my roommate and we see each other daily. I feel horrible. Any advice on what I should do to get rid of the conflicting emotions?