I've been in a relationship for 1 year 2 months now, and I really love my boyfriend and I can't live without him, but there's this guy I know for like 4 years, there's always tension between us, we don't really talk but when I see him my heart starts beating so fast. I saw him yesterday and I couldn't stop thinking about him till now. I feel like crying because I don't know if he feels the same and I don't want to end up things with my boyfriend. What should I do?