Have no friends..

I’m 25 and have never felt so alone! My boyfriend is amazing and has always been there for me but I have no friends. I have the odd couple of people who only really bother with me when they want to go out (clubbing) which isn’t very often. I feel so alone, I have no one to talk to or socialise with but him. We don’t live together so when we’re not together or his out with his friends/family I’m just at home alone & can go for days without speaking to anyone but him... (unless I’m at work). I try and make effort with people but I feel it’s always one sided. As I feel so alone I want to spend all my time with my boyfriend, thats when I’m happiest but I know he needs his own time too. Don’t know what to do, I’m so down and depressed!