This reply will be as complicated as my life, flllight
I was married and had 2 DD's.
I married a second time and had 4 more DC's with XH2 (so 6 DC's in all).
I didn't like XH2's parenting generally, but his behaviour towards my 2 eldest DD's was particularly harsh.
No man is ever going to step-parent my children again. NOT because I think all men are crap, but I just can't take the risk of finding that I've made a bad choice again lol.
But yes, it does mean that there is not a lot of time for DP because I've got the DC's, the house, my degree/dissertation, and then DP to fit into my life.
DP complains that he comes at the bottom of a long line of people for my attention, but this isn't true. I don't have a long line of people, with him at the bottom, I have four areas of my life (DC's, house, degree, DP) which I am constantly trying to treat equally and fairly. If he doesn't get much time or attention, well neither do any of the other areas, and it's up to him to take it or leave it.
But I am lucky because XH2 has the 3 youngest DC's two nights a week, and DD's 1, 2 and 3 are old enough to babysit if I want to go out at other times. Otherwise DP comes round at about 9pm to sit with me, when young DC's are in bed.
If you can't get out, it would make this arrangement much harder, obviously.