Make friends with some Americans online, like in an online game or roleplaying forum or whatever. Visit the USA on a vacation and have them introduce you to their sisters/friends/whoever

It's really hard to get that marriage green card though, you're looking at many months of paperwork on top of building a successful relationship and committing your life to someone. I think it'd be a lot easier to get a job at a big company in the US and come over on an H1B, or build a SaaS business wherever you live now