Spicing things up. Help

I’ve been sexually active since I was 13. I could grind on my (previous now ex) boyfriend for 2 minutes and completely drench my underwear. I’m now 18 and have been with my current boyfriend for 2 years. At first, I could not keep my hands off of him. But now I can barely get wet and it’s kind of embarrassing considering I’m so young. Here are a few factors that I think may have to do with the situation:

1. Not enough foreplay. I feel this may be the biggest factor. Like he doesn’t really kiss or touch my sensitive spots. (Easy fix. I just need to speak up.)

2. From ages 15-16, I had multiple sexual partners(5+ don’t judge. I was safe) Like it was a weekly thing for me to rotate between 3 casual guys I was seeing, then plus some in between. I was never a “committed” gal. Could I just be bored being with the same guy day by day? I mean, he’s my longest relationship and not going anywheres.

3. We live in the same house as his mom and step-dad, plus some siblings. Could I just feel pressured that they can pop in any moment? (We stay down stairs and even have a gate to keep the youngest out. Yet I’m paranoid because if we get caught, it’s not like his mom can tell me to go home. Ya know?)

4. We were working on a long distance situation, so once we saw each other again, it was just constant. We wanted nothing but our bodies together. Could we just be overly sexual? I feel like this might be a big factor too.

It’s a lot to read, I’m sorry. But I’m just hoping any other women have experienced anything like this before. Another opinion or even some kind of tips would be helpful. I don’t have many sexually active friends, so I can’t really talk to anyone about this. I feel intimacy is important in a relationship, just my opinion, so I would like to find different ways to keep things new considering we’re both still young and have many many years to live with each other. So I’m scared that I’m getting bored too quickly.