What should I do or am I correct in this situation?

[Anonymous]

yeah so not gonna bore you with the details but i will give you the gist of the situation i am in. during my college i had a girl best friend and we were close.. we use to share almost everything but then i started getting feelings for her and even she started to have them.. and then decided to tell her this and told her... then eventually she also confessed her feelings so yeah it was mutual and we could have dated.. but i told her not exactly no but i told her that after the college it would get messy and long distance is not my thing and plus during my first year she had a long distance relationship going on with someone from her home town and watching her cry everyday due to her boyfriend accusing her of stupid little things and eventually she broke up with him after first year... and after knowing how much she was hurt.. i couldnt treat her the same way after the college ends and that is why i told we can't but i told her lets just be together without any tags.. i was trying to be a good guy cause i know myself and i will tell her something which will make her cry.. so fast forward few months.. during vacations i found out that i actually love her and miss her a lot and then i decided to tell her we should date cause i will regret it later.. then comes college and i was going to her but then i she told me that she started date someone and funny thing it was going on for a month and i didn't knew about it.. anyway i was heart broken cause i never thought she would do this to me and break my trust.. after few weeks i started to talk to her again.. but this time something was different it was my wanting to have her at all the cost and now this thing has become so much more that... i keep wanting her to be with me not with her boyfriend.. and i dont know what to do.. i just feel its all my mistake..