My 21 year old boyfriend is getting really serious about us?

Do what you FEEL is right and comfortable for you. Do not do something he wants if you are not ready. I had an argument with my boyfriend of two years about moving in with him. I am 18 and he is 19. Be sure its what you really want because its a huge commitment. You can find yourselves at eahc others necks all the time. living with someone really changes the situation. Really think about it and make sure its whats you want. I was not ready to and told my boyfriend that. if he really loves you he will wait