You may prefer to write out how you feel or have a number of face-to-face conversations.
You can also agree together how sex doesn’t have to end in either of your orgasm, and that it may include physical pleasure such as massage, cuddles or giving/getting affection.
If you both agree to explore lengthy pleasures on occasion Tantra, BDSM or sharing/enacting fantasies may appeal.
It is lovely when partners want us to enjoy ourselves.
You could use Paul Joannides Guide to Getting It On for ideas.