You have a boyfriend. You are a man. You genuinely love him. He turns you on... because he’s a man. You’re not even close to straight.
Bi? Maybe? We never get any indication he’s actually into girls.
Akira is almost certainly bi.
Wait a minute. Last chapter he and Akira cuddle, hug, nuzzle and say they love each other, then this chapter he's like; "I wonder if I'm still straight?"