Will he ever drink from a real cup?

Sometimes I wonder if Dean will ever learn to drink from a cup as he only likes to blow bubbles instead of actually drink. This has been a crazy week for Dean and I as Kevin left for London last Saturday for about a week. I'm sure Kevin is freezing there as we're no longer used to that weather. I think it might get in the 70's here this week which would be great. Especially after being spoiled in Hawaii.