Whats wrong with me?

Now i know this is not a place to vent but the thing am about to say involves both relationship and self something I don't know, i don't know why but am not happy in life it's like i have given up somehow, my partner is really excited to see me but I feel like her friends some came after me some came before me keep her like really happy, and it always hits me cause, like i don't know why can't I give her the same laugh and happiness, let's say for eg there is a farewell party and all students are gona be there, my friends, My best friend my partner her friends like many people are gona be there, it's a big party, everyone is gona show up there except me, it's like the last party when after that no one is gona see each other and everyone is gona move out or get jobs etc. my heart feels heavy af I don't know what's wrong with me, if anyone is willing to help me out please tell me something that can help me, I'll use anonymous name and will put up an anonymous age as well, but to give some idea about my age am above 18.

Whats wrong with me?
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