Unattracted to my kids father

Me and my kids father has been together on and off since 2008 we have 2 beautiful kids together...I’ve had 4 pregnancies 1 abortion and a miscarriage...He always want sex but I am no longer attracted to him SEXUALLY....he doesn’t make me feel sexy AT ALL....I mean I do feel sexy on my own but the sex with him is just BULL.....we either do missionary or doggystyle...and I have told him this PLENTY of times...I’ve even suggested we watch porn together (he doesn’t like porn).....I’ve even mentions bringing toys into the bedroom(he doesn’t like toys)....YES during our breakups we have been with other ppl and the person that I have been with sex is like HEAVEN....I just can’t seem to bring myself to be SEXUALLY attracted to him...I think it’s time we go our own ways...I tried EVERYTHING to spice it up but he just don’t seem to be into NOTHING I try to do.....

HELP ME PLEASE !!!!!!!what can I do? He is 30 and will be 31 in October and I am 31 and will be 32 in October...my sex drive is on a ALL TIME HIGH but just not for him.