<human>: I was dating this guy for around 7 months before he dumped me. After the honeymoon phase my feelings were wishy-washy...I didn't know if I could accept the person he truly is. I almost really wanted to leave him but I just couldn't let go. I was even into this other guy for a couple of weeks before I snapped to my senses. I felt like I lost all feeling for him, but I did persist with the relationship...and I ended up falling in love with the guy. For sure, this time. I started to look at him as something serious; something more than a fling. I was happy.

Not long after that, he dumped me. Now it was his turn to lose everything for me, but I have the feeling he isn't going to come back.
A week or so after the breakup we just started acting like it didn't happen and it was just so easy-going and happy until I started being just a little bit scared (or hopeful?) that he was catching feelings again. This lasted around a month. 

It stopped EXTREMELY abruptly the moment he met this other girl last week (15, from Germany staying in Canada for a month...I know it's weird but he's obsessed with anything German) and now he is so insanely taken with her. He did fight with his feelings for a couple of days...it did not work. And she likes him too.

I just feel this profound sense of loss. We are friends, we do talk and laugh and joke around but it isn't really the same (obviously). He seems preoccupied, less caring (I don't think I can run to him for help anymore), and certainly no longer all lovey-dovey. I'm not sure if I should stay friends with him (he is usually an amazing friend) or ignore him or try to win him back or chain him to my bed or anything...each option has its pros and cons.

Provide a brief overview of the text.
<bot>: I still like my ex but now he really likes this other girl. We are very good friends. I don't know what to do that would be the most healthy for me. I don't know what to do. Help?