I think I’m straight but I just made a new best friend and started having feelings for him and now I know I am I love with him. What should I do?

Take things slow. It's exhausting trying to find out if someone likes you back, especially when that someone is the same gender as you and it's your first time having feelings for that gender. Take your time to get to know him until you can complete each other's sentences, and when you feel it's right, ask him what he thinks about LGBTQ+ matters and, according to the answer, what his sexuality is. Don't create too much expectations, but don't wear yourself out with negative thoughts. All of this is normal, even if some people tell you otherwise. Your sexual orientation doesn't define you. You don't need labels. Take your time to know yourself and don't be scared of what you feel. If you ever need to talk about it, feel free to message me. Best of luck :)

I know it must be an unsettling and confusing experience, but love, in whatever form it comes, it's one of our biggest chances of happiness. And if you decide to go for it and tell him about your feelings, you'll give yourself a chance of happiness that you definitely deserve! You don't necessarily have to think of implications of any sort, at the moment. As long as we follow our heart and do what makes us feel happy, we're going the right way. It's up to you to decide if and how to identify your sexual orientation, our orientation is nothing more than what we feel we are. You might be bisexual, or maybe not, it's up to you to choose whatever definition you think suits you best.