They won't bore each other because both love to talk. (It's a close contest, but Gemini will probably win.) And they share a special compatibility, for Gemini is as restless and anxious to try new things as Aries is.
There are no inhibitions on either side. Gemini is clever enough to counter Aries's need to dominate. Gemini may seek extra outside stimulation, but is discreet about it.
Both minds mesh well; Aries is dynamic and intelligent, Gemini is versatile and ingenious.
Aries is likely to be the leader sexually, and Gemini delights in thinking up variations to keep Aries's interest at a peak. Those signs are definitely go.