You and your fiancé should be in the honeymoon phase of your relationship right now. Your engagement should be a time when you can't stop thinking about one another, can't get enough of one another, are busy planning your life together, and aren't even aware that the other people on the planet exist. A good friend of mine just got married a couple of weeks ago and, during his entire engagement, I don't think we had ONE conversation where he wasn't gushing from ear to ear, talking about his "future wife." (I mean, I like her too, but geez-- I wanted him to stop up sometimes!) I don't think I could even wrestle his phone away long enough for him to stop texting her dorky, sentimental things. And he's a fairly tough dude. That's what being in love does. Granted, his fiancé (and his mom) did most of the planning around venue, music, flowers, invitations, etc- but he's been there every step of the way in terms of planning their life together. It would be impossible to imagine him texting "sexy" things to another woman. Not only because he has moral standards around honesty and fidelity, but because he just isn't interested in anyone but her (or pictures of anyone but her). I've seen attractive women walk up to him and, while he used to turn his head, since his engagement, it's like he doesn't even see them. I know this doesn't last forever, but it should last through the engagement and honeymoon!

Typically, if the wandering eye is going to come, it comes at the time in a relationship when the sparks die, the relationship feels stale, communication isn't happening anymore, and one partner is looking to see "what else is out there." If your fiancé is doing this during your ENGAGEMENT-- the time when he should be feeling the most in love with you-- yikes! I definitely would not move forward with any wedding plans at this point. He has shown that he has HUGE issue-- fidelity, honesty, and respect for you. These are probably the three most important things in a relationship. Are you willing to marry someone who can't give you these?