Sex While angry

So me and my long time BF of like 4 years (15 yrs total on and off ) are going through a rough patch . We are figuring things out like if we should keep fighting for this or just let it go. We have two kids and honestly we are freaking best friends as cliche as it sounds we are like two peas in a pot . But our rship lacks trust and respect . But are friendship is amazing. We don't know how to JUST be friends . Being committed to each other the last four years has been a challenge but it's worth it. I think ... but soon as we decide to end our rship to save our friend ship . We fuck like our life's depended on it. And the cycle restarts. I can't give up the D . And he doesn't want me to give "his goods" away. I think we are both being selfish but that's what love does right .?? I'm so confused. Don't get me wrong I love him to death the sex is not what's keeping me but it aint pushing me out the door either lmao