Long post: What should I do exactly?

I meet a guy in the early part of 2020. We exchanged numbers and I thought we hit things off pretty well. Approximately 6 months later we spontaneously had sex for the first time and I ended up being pregnant even though I took a plan b. He basically said he didn’t want anything to do with the baby and said to put it up for adoption once the baby is born. He had also told me he had just gotten back with his ex when I told him I was pregnant. We didn’t see each other the entire time I was pregnant but somewhat communicated.

Fast forward almost a year later, he meets the baby and kinda develops a soft spot for him.

Fast forward another year(current time), the baby turns one and on that same day, I find out I’m pregnant again and it’s definitely his. I tell him a few days later and he basically says “you have to put this one up for adoption. We can’t afford another one.” Keep in mind we have never lived together nor were ever in a relationship with each so really there’s no “…we can’t afford…”

Today I asked if he could see us being together in the future and he said “no.” Later on today I asked him if it was true that men know within the first 30 days whether or not they want to pursue a relationship with a woman. His response was “Yes.”

In a way, I feel so betrayed and used. I feel like I have wasted so much valuable time on him. I’ve had other opportunities to get to know other men over the 2 years I’ve known him. But I really wanted to pursue a relationship with him. So that 2 years wasted and I am still a single mom but now I will have 3 kids soon. I’m not putting my baby up for adoption… but I feel like I have hit a brick wall with relationships and even the thought of one. I know it’s not the end of the world but it feels like it. I don’t know what to do next.

Only he knows I’m pregnant. I believe that he wants me to put the baby up for adoption so that him and his ex can adopt the baby. She’s much older and it sounds like he wants a family with her but I don’t think she’s very fertile at this point from things I have heard. They’re constantly on/off so I don’t know he was cheating when we had sex or not.

Any advice? What do I do next? Should I give up on relationship until my kids are adults?