Please don't call me immature and dumb because I already know that I am.

I broke up with my ex boyfriend of 1.5 years and started seeing someone new. A few weeks ago when I was 17 ( day before my 18th birthday) I found out that I was pregnant to the 'new' guys baby. I'm currently 18. I am still so in love with my ex and he understands that I am pregnant but said if we are going to get back together some day I need to abort my baby. The 'new' guy said that he will 100% be there for me if I want to keep this child. I've only known him for one month and don't feel love towards him like i do with my ex boyfriend. I'm at the point where I've told the 'new' guy that I don't want to be anything more than friends with him. I'm seeing my ex boyfriend tonight for coffee. I'm in need of advice as I don't know what to do. Do I abort my baby and go back to the person that I love with all my heart or do I keep the baby and either stay with the babies father who I don't really know or become a single mother. My head and heart are running wild and I've had sleepless nights over this. Any advice or words of wisdom would be wonderful at this time, I need anything😩 p.s both mine and the fathers parents know about the pregnancy.