i dont really know quite what to feel anymore.

my man and i were together three years. we have a daughter who will be 2 in june and were also expecting a little boy in june as well. he left a little over a month ago saying he needed a break because he wasnt happy and that there was someone else and i was like whatever. well we've been talking since then and not only is there not anyone else but hes also miserable. we agreed a couple weeks ago to work on things cause i mean there wasnt really anything wrong with our relationship, he just needed space (mind you hes 21 and hasnt lived it up is what he means) hes not showing me that he wants it though other than oh i love you all the time. i mean i know he does and you can tell but its like what you doin then if you love us and still out messin around. I have literally zero friends and nobody to talk to and my moms basically over me being sad and wants me to move on already but its like he is litrrally the last couple years of my life. my straight out o high school. so im trying to mush us back together asap because i dont really like living with my parents. my siblings are so lazy and nothing is child proof and nothing hets done unless i do it because im the only one who knows responsibility. I have to fit my son, daughter and myself in a tiny room and hes due three months from now and that room is piled high with junk. im overwhelmed and i dont understand anything.