So a couple nights ago, my FP told me that he was talking to his ex again (with romantic intention.) Him and I aren't dating or anything and I haven't really given much thought to us dating, mostly because I haven't been in the right headspace to be in a romantic relationship with someone. This means I shouldn't be upset about him doing this, but I am. Or rather, I suddenly don't want to talk to him or see him or interact with him at all anymore. It's a complete 180 from before, where I was constantly needing to be in contact with him. I have no desire to continue our friendship. Last night we texted back and forth a little bit, though my texts were pretty short and uninterested until the conversation eventually died. He hasn't contacted me since, so I guess I might get what I want. I know eventually I'll come out of it and regret letting the friendship potentially die over something that shouldn't involve me, but right now I'm just indifferent. I don't know what to do.