Does he mean it?

So me and my boyfriend have been together for only a few months now (about four) and we're still in high school. He's about a year older than I am. We've talked about when I wanted to have sex because I had a rough patch after sex with my ex right before him. I told him I wanted us to say I love you first, so it wasn't like he loves me because I'm having sex with him he loves me for real. Last night was the first night he said it when we were play fighting but I'm not really sure if he meant it or not because even when I asked he said he meant it. I feel like I'm overthinking it but I've been burned before and I just don't want ut to happen again.