An interesting combination which can work quite well as both sides are outgoing and social. 😛
However in this case its small differences which may cause tempers to fly, as the male will become enraged and start fuming as soon as the female tells him that he is wrong (which he usually is). 😆
Being a Gemini, he will probably think its funny to do something childish like draw moustaches on her posters of Rani with a permanent black marker. 😆😆😆
He's forgotten one thing though. NEVER mess with a Sagittarius female, because he's not going to be laughing when she puts a new form of sauce in his sandwiches (which came from a dog) and spikes his eye-drops with napalm.😆