Hi K4J and welcome,
If you and your boyfriend are engaged to be married you could apply for a fiance visa. Other than that you could try to find an employer to sponsor you if you have a high level of skills and experience. One other option would be to study in the US yourself but as an International Student you would be paying much higher course fees and would need to prove that you have ample money in your bank account to support yourself without working for a year. The website below gives an outline of visas for the US.
Visa Home
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