I forgot the name, its yaoi about two brothers . Boy A is in love with boy B . This is all...

I forgot the name, its yaoi about two brothers . Boy A is in love with boy B . This is all i can remember : Boy B found his brother masturbating while he was sleeping ( Boy B ) , later Boy B started touching him with his legs , and later he fall in love with him.
I hope someone will know what manga is this .
Sorry for mistakes English is not my nativ language (≧∀≦)