I have dp'd a few times with a husband and wife. From my experience if you both aren't very open about this and both have your heads on str8, you shouldn't do this. Have seen this cause lots of problems with those who wasn't completely secure with their relationships. Have been with swingers that thought of this as just another night of sex with a third person. Size won't make your wife happier in bed. Don't mess up a good thing. You are more than well equiped enough to make her sexually happy. | 
