BPD and my relationship.

Hi there, first time poster. I'm 20 years old and have been dating my current boyfriend for over a year now. He is truly the kindest, sweetest man I have ever met and he knows all of my issues. Also, he is studying psychology so that helps a lot as well. I love him. I do. It's just.. I don't know.

When I was a teenager I had a very toxic relationship with someone for 3 years. And although it was toxic and we're both better off, it had something that my relationship is lacking now: passion. On my end at least. I used to be so affectionate and loving, and now I'm just not. Not because I don't love him, I do. Truly. He is my soulmate. Even with my BPD at the end of the day that is one thing I'm sure of. I just don't know why I feel this way. Is it me? Is it my BPD? Does anyone else feel this way sometimes?