Go get a vibrator. Not one to put inside but one to play around the clit with. I can't say I have the same problem but I stay wet longer and if you are not in the mood it will put you in the mood. Make sure you have a towel handy, squirting happens. The vibrators are great for foreplay and make sure you get one with multi level option.
Try using Lubricants like KY Jelly. It helps you stay moist! Also more foreplay will help you naturally stay moist..Have fun!