Reassure your fiancée before the bachelor party, and discuss your expectations up from so there are no surprises.

Tell her that you love her before you leave for the evening.

Conduct yourself like a gentleman while remaining one of the guys. Remember, bachelor parties are more for the single guys of the bunch than for those who are married or engaged.

Tell to your best man or bachelor party planners about what you are comfortable with and what will not work for you. This is no time to be pressured into being one of the guys if it means your future marriage will be jeopardized.

Designate someone to be totally responsible for your in case things get a little crazy.

Be sure you call your fiancée before you get too inebriated to tell her that you love her.

Taking Care of Your Fiancee and Bride
Remember who is the most important person in the wedding process: your bride. She is the reason this is all happening.

Remind yourself why you chose each other, and be there for her every step of the way through this exciting and stressful process.

Even if you are not planning to be involved in the day-to-day wedding planning aspects, at least choose a few specific areas to give your input. For example, most grooms have strong opinions about the music, food, and limousine or send-off transportation.

Listen and communicate—a lot.

Get away together for a date night or an engagement weekend. Pamper and indulge each other.

If you are negotiating a prenuptial agreement, remember that heightened feelings may emerge. Keep your sense of humor, and keep the lines of communication wide open. Don’t let this legal formality spoil your happiness (and if it seems like it is doing so, consider eliminating this step altogether).

Shoe up at the end of a bridal shower to help her open gifts.

To earn a gold star, bring flowers to your fiancée at the shower.

To earn platinum-level stars, bring flowers for your mother and future mother-in-law at the shower.

Buy her a wedding gift. Whether it be extravagant diamond earrings, a new outfit for the honeymoon, or a beautiful bouquet of flowers with a card sent to her dressing room on the wedding day, let her know you haven’t forgotten her and want to present her with a symbol of your love.

Have your wedding bands engraved with a meaningful message. The date and your names are find, but you may want to surprise her with a short phrase, poem, or special term of endearment that only you two know.

Proofread the engraving when you pick up the rings. Mistakes have been known to happen!

Have a special handkerchief monogrammed with both of your married initials on it to hand her during the ceremony (or to use yourself!) if she starts to cry.

Take care of your bride and compliment her often.

Be supportive and involved (if she wants you to be) in the registering process.