DH is very lovely and I appreciate all his good qualities. He has always been a bit shy when it comes to sex though. He is great in missionary position and likes it when I go on top but is quick to loose his erection if we attempt anything else to the extent that I tend not to try anything new. Sometlmes I wish he would ravish me on the sofa or such like but we always do the sameish things in bed. Is there any chance I could make him more adventurous or be happy with what we have?