My (ex)crush got a girlfriend and is starting to act awkward around me..?

So I had a crush on this girl for the past 3 months and I think I was just ridiculously infatuated with her.. we flirted (holding hands, touching, she kissed me on the head) but I never asked her out because I never had a certain time where I felt like she actually liked me as more than a friend.. I mean... she was pretty cuddly with her other friends too and she always had friends with benefits around and she'd show affection to her fwb's when she knew I was around to see it. But she got a girlfriend on the 13th and when I see her around school now, she kind of ignores me. Like yesterday she was holding hands with her gf she was walking my way and when we were 5 feet apart she put her head down. i don't think it was a coincidence.. what the hell do I do now?.. I mean, what does that mean? does she want nothing to do with me? did she have feelings for me? does she still have feelings for me? one of the reasons why i didn't ask her out was also because i'd rather have a long term friendship than a short term relationship.. now that I see a friendship isn't even possible, I feel so mad at myself.