Advice

So I’d like to preface this by saying this is my first relationship.. I’ve been dating my boyfriend for a year and a couple of months and for a while now I’ve been wanting to be single but idk why today it’s just all over me. Early November I broke up with him because I felt the need to explore my sexuality and figure things out, but we got back together two days later because I missed him so much and I felt like I had no one to rely on. Now, I’m having these feelings of wanting to be single but I also don’t want it to be like before where I make this huge decision on a whim and get back together again. I tend to spend time with my friends more than my boyfriend, and they don’t often intersect, even though both parties wanted me to include my boyfriend when we hang out and vice versa. He also thinks so far ahead (like marriage and things) and while I think it’s fun to think about I don’t want to take it seriously, I’m only 20!!! I don’t know what to do…