He is threatening separation.
While his actions/disrespect may-or-may-not be the initial cause of your LL, it certainly can't be helping!
You say you feel like he disrespects you, how?
>>In a way I guess I deserve him to leave me because of my LL.<<
Honey, this is not about what you deserve. Nobody deserves to be treated with disrespect, regardless of their libido level. First of all, this is about
I don't have anything to add that the others haven't already mentioned.
If he disrespects you in public, it's hardly going to make you feel close to him. So that needs to be addressed. At this point I think that with him threatening separation, then you need to suggest counselling.
It sounds like there is a lot of baggage here, all the way around.