How do I leave my(F28) relationship with my bf(M25)?

My boyfriend(M25) and I(F28) have been officially together a year and a half but we had a very on again off again beginning due to an ex of mine coming back into the picture after the first couple dates and me getting a job abroad. The beginning was Jan 2023, so.

I feel like the last 6 months have been rough. It mostly started when he went on a boys trip on my birthday and I dont feel like I've ever truly healed from that even if I don't mention it anymore to him. He also has never said he loves me. When I ask him if he does he'll say yes but he says he has issues with saying it that he's "working on". This is obviously something I cry about regularly. He also rarely takes me on dates and never buys me flowers. I stuck with him because he's a good life partner(he'll do almost anything for me) but he's just not romantic at all and it's destroying me.

He's a good man and everyone says it but he doesnt show me any romance whatsoever. He also has stopped trying to have sex with me. At the start it was constant but now he says he feels like I'm not into it so he doesn't want to bother. He's right though, I still want him but I'm less into the sex because I need romance.

Anyway I dont know if I have the strength to leave him? I still have hope waiting a bit longer will bring me the love and happiness I want and need.

Could people please send encouraging words? I don't feel like I can talk to any of my friends about this