I am gay and I like this boy in my class. He is dating a girl and knows how I feel. But, recently He has been showing signs that he is bisexual. How should I approach him with this?

If he already knows how you feel, then he already has all he needs to decide whether he wants to be with you or not. He knows that you have feelings, and so you would be ready to be with him if he wanted to. He will be the one to come to you, if he has feelings too. It's always better to let people take their own time to decide if, when and how to come out, trying to bring up with him his possible bisexuality can make him feel pressured and lead him to push you away. Giving him the chance to handle with his sexuality and feelings the way he wants is the best thing to do.

Since he is already in a relationship, the reasonable thing to do is respect his relationship and the girl he is with. If you like him, you will care about his happiness. Also, he already knows how you feel about him, so the ball is in his court. It is up to him if he wants to start something. If you aren't good friends with him, work on building a strong friendship, but don't make any advances yet. This will bring the two of you closer together, while showing him that you respect him and his relationship. I wish you the best of luck.

It’s very difficult to deal with crushes like this. However, in this situation, you need to let him explore his sexuality on his own. He is in a relationship, therefore probably unavailable to you. It’s so hard to get over a crush who is straight/in a relationship/unavailable, it’s a mess of emotions that can fill your head and be overwhelming at times. I personally had a crush on a girl in my class, except she was straight and uninterested. It did hurt for a while that I liked her so much but she didn’t feel the same, but eventually those feelings passed. From what I know of your situation (which isn’t much, I admit , you do not need to get involved with helping him discover his sexuality. He will do it in his own time and it will only make it harder for you to get over your feelings for him. It’s a tough situation and I’m sorry to hear you’re going through this, but it will get better! This too shall pass.