I like my ex’s best friend

Ok soo I’m kinda in a complicated situation. I’m a currently and junior and my ex is a senior. Basically my ex and I broke up almost a year ago and had dated for about a year . It’s been a really hard break up for me because I truly was in love with him but as time has went on I have gotten drastically better. Now, I’m the type of person who likes to be in relationships for reasons I don’t know why and i’ve been wanting to be in one again. My problem is that the guy I I’m interested in is my ex’s best friend. Now a Little background. The guy I am interested in has also had interest in me since freshman year and vice versa. But during freshman he dated one of my friends at the time and so I didn’t do anything after they broke up. So I decided to Pressure his friend instead and we got put on and he was actually the one you encouraged and convince my ex to start talking to me. At then end freshman year me and his best friend started talking and ended up dating but from the start I kinda realized that I had maybe made the wrong choice and I wanted to talk to my friends ex. But it was already going well with my ex so I left it and we had a really great relationship. But now my problem is that i like the guy and vise versa but he has told people he can’t do anything because he’s scared that my ex will find out. For school we had this assignment that was to go on a date with someone and he asked me and I was so happy. But he told me not to say anything Bc he didn’t want my ex to find out. I was so excited and couldn’t be happier. But when I tried to plan it over the next couple of days he wasn’t putting any effort and made me upset. So I had to plan the date myself and at this point it wasn’t even about going with him it was about doing the assignment. I had texted one of my friends about my frustration who’s close to the guy I like and he said he wasn’t completely sure he wanted to go Bc he was afraid that my ex would find out. I understand the situation they are best friends and that’s hard to lie so I get where he’s coming from. So I texted him saying that if he changed his mind because he doesn’t feel comfortable going Bc he thinks my ex is going to find out then I’m chill. He responded with “no it’s fine I need to do the assignment too”. I gave him a out and he didn’t take it. So I obviously was trying to plan stuff still. Basically he ended up leaving me on read and never texted me about the situation again and left me Hanging with no date and hurt feelings. According to my friend, he’s not gonna try to pursue me until next year when my ex leaves. But I feel like that makes me sound so desperate and available. It would be easier to move on if he wasn’t so attractive and funny and basically everything I look for in a guy but I know I’m worth more than a option that he can get whenever he wants. I don’t know what to do help!!

Also when we got back to school. It was really awkward and we didn’t really talk like we had usually did and it was upsetting as well. But one of my friends said that he felt bad about the situation so idk. We are better now and he had texted me and started to act normal again but idk what to do in this situation. Please give me any advice whether u can relate to this situation or not. Thank you