We know that he's already married to Cadence, but that didn't stop him from getting many other admirers. Whether it is one of the mane six, either Celestia or Luna, or even if he's shipped with either his sister, Twilight Sparkle, or even his mother, Twilight Velvet. The important thing is that he has a lot of ponies giving him the look of love even if one of those ponies is actually a changeling, hint hint.