"I like you."
Translation:Mám tě rád.
You can use it in various situations. To your wife (then it means I love you), to your relatives, in the right context even to your friends of either sex (in the right context, it could be understood sexually otherwise), but it is less likely. In the third person (mám ho rád, mám ji rád) it could be about anything, your favourite actor, singer, pet, whoever.
My Czech spouse says that this is what the man would say, and the female says Mám tě ráda. Also that they say this a lot instead of "I love you (Miluji tě)" so much. Miluji tě is stronger, and more special, and that we Americans use the word love for everything, (which we kind of do.) LOL