I have an out… but scared to take it

I have been with my boyfriend for 2.5 years. The once perfect reality has turned into a draining cycle. Would say if he’s not a narcissist he’s pretty darn close. It’s like I love and “hate” him all at the same time. I’ve told him for months I wasn’t happy. It was like I never said it. Finally he has came to realization that I’m truly not happy and wanting out of this. FYI- I can’t just up and leave as silly me sold my house for this relationship and I have 2 kids. So getting somewhere for us to go is my main priority prior to upping and leaving without said house. Rent is outrageous and honestly even with me working 2 jobs I can not afford the going rent rate unless I want to survive on $100 after bills for gas, groceries, necessities etc. I make too much for government assistance but child care, rent rates, etc is out the butt high. I found a room for rent, which is not an ideal situation as it is a man’s house (actually a guy I went to school with so not a complete stranger) he is only home 1-2 days a week and rent would be pocket change compared to the rentals. I’m just second guessing myself. I do love my boyfriend more than anything however I know I’m worth more then he makes me feel. He’s not the same man I fell in love with. He said he doesn’t want me to leave and he wants to work on our relationship. But I have a lot of grudges so to speak being held of encounters he has had with other women, gas lighting, lies being told even the little things he shouldn’t have lied about etc. I guess I’m just scared to go but I know I need to. Reassurance, guidance, pep talk me up. Something. I feel so lost, lonely, afraid. Side note: he is not my kids father.. we do not have any kids together. They were from my previous marriage.