You just...know. Of course it's not always that simple, many people will go through phases (especially in their teens) when they are confused about their sexuality and plenty of straight people can have crushes or interact romantically/sexually with people of the same sex/gender. There are terms such as 'questioning' to define people who maybe aren't sure what sexuality they fall into, and that's fine because you don't owe anyone a term.
You will know when you feel romantically attracted to the same-sex. You could be bisexual but if you are only aroused by the same-sex then you know you're not straight. Either way it is okay to be you gay or straight.
From the information which is available, you do not know.
The only way to know is for her to tell you.
well, i don't know why they exactly are straight but i think that they are made on a plate boundary which is also a fairly straight line. so i don't know if it is right but try
as far as we know yes
If you know he is straight and very attractive towards girls, you know him well.
If you are gay, just be completely honest with him. I am a straight guy, but I have a friend who is gay, so I do know this. Just tell him that you understand that he is straight, but that you have feelings for him and you wanted him to know because you felt that you needed to tell him.
Not that I know of...Guess not?
i don't know what youre talking about.
hes straight i know it
I don't really know! i think theire all straight A's really. ask someone who does know on the question answer thing maby they will know! and then hopefully I'm right. like if the cullens&hales all are straight A's. then well know, ask 4 there grades and find out!
Get to know her, and let her get to know you. Asking her out straight away will only annoy her and make it harder next time.