The "hetero-" prefix stands for interest in the opposite sex, where as the "-romantic" suffix defines it, not as a sexualattraction, but rather, a simply romantic one. Meaning that the person is uninterested in anything regarding sex. Homo-, bi- and pan-romantics exist as well. (In case there is any question, the difference between bisexuals and pansexuals falls into preference. Pansexuals have no gender preference, and bisexuals do, but still are capable of having intimate feelings for both genders.)
Depends whether you are a man or a woman. If you are a man that would be biromantic heterosexual If you are a woman that would be biromantic homosexual. Okay I read that wrong. If you enjoy having- sex- with both men and woman that would just be bisexual. A sexual- relationship is having- sex unless you mean a romantic relationship? That would then mean you were heteroromantic bisexual as a man or homoromantic bisexual as a woman. Overall, your question is a bit confusing, but I hope this helps anyway! :)