Should We Break Up..?

hello everybody, I hope you are all doing great ☀️

Well I’m seriously in trouble, I need some life advices about something that happens to everybody (I guess?)

Here is the situation : I’m 25 (girl) and we’ve been in a relationship (girl too) for about 5 years now.

The thing is, we usually fight because we are different her and I, in the professional field as well as the personal one, it was okay, but we can’t stop fighting, even for small things. The other thing is, I don’t really know if I love her like I should.. I’ll always love her cause I want her to be happy and care for her well-being, I’m sure about that, but I feel like I’m trying to save an old marriage with 2 kids, and feel like we are not supposed to have this kind of love… (the love you try to keep after 2 kids but you have 0 passion whatsoever)

We don’t have sex anymore also, I’m not very comfortable, or feel like I have 0 interest in that with her, its complicated

What would be a good advice in this situation? I know its super lame to talk about this or her like this, but I tried to be very clear and simple Thank you