That description...Yeah, I'm sure many can relate to that.
While I do sympathise somewhat with him liking her a lot, I feel somewhat bad for the fiance. I mean, she even sort of resisted at first but he was being a bit pushy.
That ending though...Well, I guess at least it's a good sign that she's starting to contact you again?

I'm conflicted. Not about the story but which commenting path to choose: the "poor fiance", the "Go for it, boy! Steal your crush away from the fiance! You love her more than her fiance and we all understand!" or the "I think this is hot because the MC reminds me of me, but I always badmouth everything beside vanilla and downvote every comment not entirely negative about non-vanilla stories. Better write a "reflected" comment about how cheating is wrong, but the fiance being a jerk and the MC loving her more and complain about the missing vanilla tag. We all know it's complete bullshit, but still...". Difficult decision... Wait! I can pick the "Doesn't know what to comment. Better write a way to long, "witty" comment about comment writing in oder to appear very clever. And better include a self-ironic part so that I can always say I did everything on purpose. No one will suspect that everything started as little joke and went on far to long and to the point where I can't just delete everything. And I should stop drinking while commenting on everything..."! Yeah, choice number four seems about right!