[beginner] how do i mix a slow track into a fast track?

hello everyone,

I'm new a DJing and mixing. I've been practicing alot lately, but i faced one problem i'm not sure how to solve.
I'm trying to mix a 120bpm track into a 125bpm track. Obviously i can just play with the tempo of the slow track to match the 125bmp track, beatmatch it propperly and i'm done. The problem is, the song is absolutly perfect at 120bpm. If i raise it to a 125bpm it just sounds less good, and i feel like i'm destroying the track.

So what are ways to mix my 120bpm track into my 125bpm track without changing the bpm.

This might be a very silly question, but i just have to ask it!