Most adolescents feel clumsy and awkward because its in their nature to be like that. Also they may have started to develop feelings for one another and think that its awkward to be around people of the opposite sex.
sometimes he might feel awkward sometimes he might feel the same about you or he might just get an erection
Well, sometimes when people are in awkward situations, they laugh because they feel nervous and awkward.
Teenagers often feel awkward when meeting people.
some friends may feel awkward about talking to you.
Embarrassment or shame may make his feel awkward.
soft and awkward
sometimes, either he's not quite sure how to act around girls or he's just shy around girls he likes .
A boy acts clumsy around a girl when he is in love. Or he feels shy around her since he doesn't know how toact around a girl he likes. Also he may feel uncomfortable. My advice is that you should try to make him feel comfortable around you, resuting in him not being so clumsy.
I don't think one should feel awkward at all, besides when a girl is on top, I doubt that couple is worrying about how awkward they feel, more about how each love each other and kissing etc.
If he is your boyfriend now then there is nothing to worry about or feel awkward about as he is with you. You obviously liked other people before him as well so it works both ways. Move forward happy and don't feel awkward or insecure as he chose you and you are with him, enjoy this time.
Well, I dont think anyone can tell you why you feel that way. You might want to improve your question that tells us why you feel awkward so we can offer advice.
Ask their permission edit: how?