Dude, remember - "Growing older does not mean you have to grow up". It's just that you have let your beer drinking skills slip. In turn your confidence level fell, coupled with your guilty conscience of being married and talking to hot womens (the "s" is not silent).
Get back to the basics!
1. Start drinking more, get back to your prime form.
2. Start going out and talking to strange women. Work on your "rap" or as the young kids call it your "game"
2a. Begin with the fat and ugly chicks then as your confidence builds
2b. Move up to the MILF's.
3. Finally, take a test run when you think your ready - get your wife and her freinds out on the town and see if you can get them trashed and at a stripper bar by the end of the night. If you can do that, your form is back baby!!!!
In a month or two you'll be ready to belly-up to the bar with those two hot 22 year olds and drink thier sweet, tight, little behinds under the table and wow them with your intellect and witty humor.
Before you know it, you'll be asking your wife if she is ready for a flaming 4-way at the stripper bar! AKA Manage-a-Quat'