Potential breakup advice

I have realized that I have lost my feelings for my boyfriend of 4 years. I’m 20 years old, he’s my first love and I’m so incredibly sad about all of this.

I have lost my feelings before but they have come back each time after having spent more time together. But now it just feels more.. real. I don’t think I can fall in love with him again - and even if I could I’m no longer sure if I want to.

I decided not long ago to give our relationship some time this summer - we haven’t met that often and much since last august due to me going to university in another city (we both live in Sweden). I wanted to try to fall in love with him again by meeting a lot now that I’m back home - and if I didn’t fall again then I would know for sure and break up with him.

He talks about how much he has missed me and how much he loves me and I say it all back - but I don’t feel it. I feel so fake.

I mean I love him but I’m not in love with him. I guess it could be more like a deep lingering connection and less like romantic love.

Does anyone have any general advice?

How do you know if it’s worth it to keep trying? How do you known that it’s not?

If/when I talk to him - what do I do?

How do you get through a breakup?

Our relationship has always been good and stable, a bit uneventful and we have never really fought. Will I ever stop doubting myself about this?