The pacing is off but the concept is good.

I feel like if it was more fleshed out, and a little longer it would be such a better story. Cause the pacing is kind of wonky and made me feel real confused about time passage and why the MC returned his feelings so fast even tho I guess a long time passed between the confession and the MC having feelings.

I agree. I was surprised when it suddenly said that they were fwb for 2 months already. Just confusing.