<human>: Can you provide a brief rundown of the text in within 3 sentences?

I feel a bit silly asking advice on this but somehow it has been hunting me for the last few days.

About 4 months ago my girlfriend of 6 years broke up with me. This happen out of the blue, for no apparent reason and she argued she needed to be alone and our relationship wasn't working. I've tried to change her mind for a while but then I realized that there's no point in forcing a relationship where one of the parts isn't 100% happy.

She wanted us to carry on being friends but I decided that no contact was the best approach as I was (still am) suffering a lot so I haven't spoken to her since she moved out of our flat 3 months ago. Even though she made me suffer and played with my emotions a bit, I still love her and miss her.

Now her birthday is coming up on the next few days and being a date that used to important for both of us I wonder whether I should text her and wish her a happy birthday and maybe take the opportunity to let her know that I still miss her a lot - who knows if she still feel the same...

So, on one hand it feels weird if I don't at least text her as she's been the most important person of my life for the last 6 years but on the other hand I want to let it go and move one and I know that contacting her wouldn't be the best way to let that happen.
<bot>: She broke up with me after a 6 year relationship. Now I'm trying to avoid contact but I feel like I should wish her a happy birthday and let her know I still have a lot of feelings for her.