Feel bad for leaving my boyfriend of 9 months!

We started dating in April. During the relationship we had our up and downs. I was single for 3 years before we dated. So me being single for so long it took me a while to adjust being with someone again. I was independent. My now ex was hurt by his baby momma, she left him. And because of this my boyfriend kinda seemed like he needed constant attention and love. He mentioned to me he has bi-polar so I never dated anyone with bi-polar. Also, I’m a mom myself I have toddler 4 year old and I started nursing school last august, also was juggling a full time job. I never really paid attention and gave the love my boyfriend deserved. I was too caught up with nursing school and burnt out from my job that I wouldn’t really show affection to my boyfriend due to me being extremely tired. I had quit my job in November because he wanted me home more. My exs job had also laid him off, in November so me and my ex being home 24/7 and seeing each other every single day (I moved in with him) I was starting to get annoyed by the little things he did. I feel bad about it. I was stressed due to not having a job anymore and bills are tight and I would get upset and distant myself from my now ex boyfriend. He would try to assure me things would be okay but I just wanted to work and get money into the house because we both have no jobs. We had a argument on Thursday and now we haven’t talked much. I am back living with my mom and it’s hard being home. I can’t concentrate. Nursing School is starting back up again the 18th and I don’t want to go back to school. I Realized that I shouldn’t have let my stress get in the way of our relationship. I feel bad for not showing him the love he deserved even though he showed some insecurities. I loved my ex and he would tell me things like you don’t act like other girlfriends which was annoying when he said that. I now realize it’s all my fault. I wish I could go back and change things. He told me all I care about was school the night I left. Does anyone have any advice on how I can get over this. I feel lost at the moment. And need to vent! 😞