The best way to be a good lover is to consciously think of both your needs all the time. In bed, do some things that you might not like at all, but your partner loves.
Communication is the key to better any relationship. Become true friends that are able to express the most intimate desires and fantasies in a very sensitive and caring way.
Communication. Talk to your partner and listen to what he/she says. While in bed respond to what he/she says feels good or what they like. Everyone is turned on my different things and the only way to really know what they like is to ask.
