It is thoughtful to bring a friend places with you.
Alex is heading to the beach when he runs across his friend.
Alex wants to proceed to the beach.
Alex asks his friend to come along to the beach with him.
Alex says hi to his friend and continues on the the beach.
Alex's friend feels happy to be included in Alex's plans.
When Alex's friend hears that Alex went to the beach after seeing them they're hurt that Alex didn't invite them.