Masexual, also known as mansexual, refers to the exclusive attraction to men. This includes binary men, but it can also include masculine-aligned non-binary individuals depending on the individual. The term was made with non-binary individuals in mind, so they don't have to use terms like gay or straight, but binary individuals can use it as well.
Similar terms include mascic, viramoric, uranic, and minsexual.
The feminine counterpart is womasexual.