Losing feelings for my bf?

So I’ve been with my bf for 4 years. We had a lot of issues maybe the first 2 years of our relationship but we ended up working things out. This last 2 years hasn’t been a walk in the park but our relationship has improved so much and I would say I was actually really happy in this relationship.

Well at least till now. I’m not happy anymore. I feel like this relationship really took a toll on me. Maybe this last 3 months has been hard. A lot of arguments and fights. I’m to the point where I want to give up. I feel like I’m losing feelings for him. I just don’t feel excited and in love like I used to and that makes me sad. I expressed to my bf a few times that I’m not happy anymore and he just says “we’re work it out. We always do. I love you”. I’ve been waiting and it feels the same. Last night I told my bf that it feels like I might be losing feelings for him. He asked why. And I just said well because it’s been a lot. I feel like I can’t keep fighting and arguing and forgiving. It’s just all piled up in my heart. And he just said “I noticed. I noticed that your different with me now. I’ve been noticing that your losing feelings and I just kept telling myself that it isn’t true. I’m sorry for all I did and all our fights. I don’t want to lose you. I understand where your coming from. It makes complete sense why your feeling this way. It’s been a lot.” And I just cried and said “I just don’t know what to do anymore” and he just hugged me and said “if u wanna leave I can but I know we can work thru this.”

Ladies idk what to do. Idk if I’m really losing feelings or I just feel drained. In all honesty if I can take a pill where I can be happy with him and so in love like I use to I would. I do see my bf making an effort into our relationship. Which makes me think there’s hope. But I’m just confused.