They often start out happily..

Hello Everybody,
I was translating this sentence in my language and came across a grammar point that I wasn't sure about. So basically, I am talking about 2 people : A and B. A and B have different preferences for clothes.
And the sentence was:
"They are usually happy when at the moment they start to go shopping together, but often come back unhappy." This is because they have different preferences and often argue with each other.

Did I use the correct tense for the first clause? I am talking about a present situation, like habits or things of the sort, so I put the first clause in present tense. What do you think?

And what about the tense of the second clause "come back unhappy"?

Thanks,
PrinnySquad.