I've been a pretty bad person..

So basically, I've been a bad person.. We'll call the first person X and the second Y. I've been friends with Y for about 5-6 years and thought I entered the friendzone. I started a relationship with X for a few months and it didn't work because we had very different interests. A couple weeks later I (somehow) managed to exit the friendzone and started 'seeing' Y and hence after started a relationship with Y for a few months. It didn't feel the same with Y as it did with X, and it ended up not working out because we will be going separate ways after summer and there was no point to lead each other on (Also I was too cowardly to end it). However I realised after my relationship with Y that I still wasn't over X (I know, I'm terrible) because I didn't feel too down after the breakup with Y. X still likes me I think? When she heard about my breakup with Y she mentioned to a friend that in an ideal world she would get back with me but wouldn't because she doesn't want to 'retrod the trodden path' as it were. I am best friends with Y so I don't want to hurt her in any way and I realise I have been a nightmare of a person. So what do I do? What CAN I do? Thanks in advance

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