If a guy includes you in his future plans is he being sincere or just living in the moment?

If a guy includes you in future plans is he being serious or just living in the moment?

for instance you go somewhere with a guy and he says "maybe next year we can go here." He talks atbout doing things in the future with you.
If a guy includes you in his future plans is he being sincere or just living in the moment?
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