Is it wrong that I love my boyfriend a lot, but sort of miss being single?
Why do you miss being single?
I've been taking care of my boyfriend for a long time now
Taking care of another person is hard but you should examine if you can be committed to him. It is not good if he wants to be in a committed relationship but you don't. You both would be hurt if the feeling is not mutual.
I decided to tell him that I love him and realized he isn't that bad.
That's good, and I am glad you were able to find such a simple resolution to this. I am sure that you will have a lot of happy years with your boyfriend!