Paint Ball Advice for a Newbie? Anything is very appreciated?

my boyfriend wants to have a paint ball war in the woods behind my house. my dads got a gun but ive never used it. hes really cocky saying he'll let me win a couple times. and that if i see him, and it doesnt look like hes seen me, he did and is moving to kill. now ive grown up w/ real guns. ( i prefer rifles) and i know its more point and shoot. i know the woods better than the back of my hand so theres an advantage. but i want to know what i should do to help me win at least one game without him leting me. i want to stumble a bit to look like an easy target then kick his ***. so stratagys, shooting advice, clothing advice...acting advice...well anything u know i would like to know to. he plays in turnaments so hes really good.so if i beat him once ( no matter how much he swears he let me) then i can tease him forever! please help!