I don’t know how to tell him

Sooo my partner and I have been together for a year and a few months .. hasn’t been the easiest but we’ve got through a lot ,

I do feel like I’m falling in love with him but I don’t know how to tell him .🙈

I mean I want to , but then I don’t because I’m scared he may not say it back , or we have an argument and I’ll regret it 🙄😓