Why is my boyfriend pulling a bait and switch?

My boyfriend (30) and I (26) have been together for 5 months. Before we started dating we had a conversation about what we wanted. We both agreed on a few things:

1. We didn't want a relationship. Him more than me didn't want one.

2. We both don't want to be married

3. We both don't want kids.

The relationship happened because I was seeing multiple people and one of them asked me out. I agreed under some less than ideal circumstances, and later went back on it. My current boyfriend got jealous and said he was planning on asking me to be his. I really liked him and said sure. After that he said I would never meet his parents which was fine with me. We agreed that if I got pregnant he would pay for an abortion. No marriage conversations.

Here recently the script has changed.

He's made tentative plans for me to meet his family, which is hassle because they are out of state. He brings up marriage a lot in conversation. Even during some that don't go in that direction. He jokingly brought up engagement rings. He also has gotten more paranoid about getting me pregnant. I told him I didn't understand since we have a plan. I take my BC religiously and I'm fairly sure I'm infertile anyway. Just feels like he's gone back on so many things. If I talk to him about it he avoids actually talking about. So what's up?

Why is my boyfriend pulling a bait and switch?
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