history: I can't believe I never knew how well my husband can drawl.  I can't believe my husband hid a talent her had from me for 15 years.  That sounds interesting.. What was it? And how did you find out? And why did he hide it! If you don't mind me asking_comma_ of course...
current: I happen to come across all his drawings. He is as good as most professional artists! 
next: Oh I see.. Well that's a pretty positive talent then, huh? Maybe you should encourage him to keep doing it. Maybe he misses it. You could get him a present for his birthday or Christmas that was related to drawing tools/pencils and all that.