Stuck between a rock and a hard place.

I had my miracle baby with the man i love april of 2015 now we are expecting another child in jan of 2017 only he recently moved on and is with the woman who was proud to be his side chick. And i am alone and 5 weeks pregnant. He swears he wants his family back but wont stop being with her until i decide to take him back. Swears hes only with her for her money cuz hes in debt.(too much to tell) and claims nobody will give money to someone they arent having sex with(mostly true) so Thats why he is still doing it. Idk what to do. He hurt me like no other and i regularly let him see his son. Everyone says he wont change and not to take him back. And they are probably right. But i do love him and I'm

stuck between a rock and a hard place.