hello there , you look nice having a good morning ??These are the best ones I have sent my girlfriendGood morning beautiful, how was your night? (referring to the song)Morning loveGood morning...
Rejection is hard on some people so it may not matter how nice you are in saying no. However, there is no way around it...if you need to say no, then don't be afraid of how you do it. Just be polite...
A cute way to say it is to point to your eye, make a heart with your fingers and point to the person you're directing it to. (You could also just point to your heart for the second action.)