Moving to England

The only thing you can really do is wait I'm afraid. It takes A LOT of planning to move to another country, and unfortunately the government doesn't make it easy. I was in your same situation. It's a lot of waiting around. And they don't let you just move there with no commitment.

I'm pretty sure you can remain in England for up to 6 months as a "tourist". Unfortunately, you won't be able to work, hold a bank account, or do other things that residents can.

If you can find an internship, you can get a BUNAC visa to live in England for 6 months. The downside is, most internships will be unpaid, so you'll have to save up beforehand. However, it gives you something on your resume if you do ever decide to get married and live in England.

As for your boyfriend, has he looked into different programs  to come to America? If he has summers off he should look into Camp America, where he would work at a summer camp. There might be a camp near you that he could get a job at and you can be together for the summer. Disney/Universal also have international student programs. I don't know where you are in the states, but even if you're not in California or Florida it would still be cheaper to visit him domestically rather than flying to England all the time.

I know it's not ideal, but that's unfortunately what happens when you fall for someone in another country. But if it's worth it, you'll make it happen!