<human>: I am a 20 year old female and my sister is 18. My sister and I were both part of the same rock climbing club in high school. In that club, we met and made friends with a fellow club member, Sam [18M]. We were all part of that club for 3 years.

After Sam and I graduated, my sister and I lost contact with Sam. Recently, Sam got ahold of us, wanted to catch up with us, and invited us to go to the local rock climbing gym that we used to go to while in the club.

The point of conflict is that my sister, without asking Sam, also invited her boyfriend, Daniel [18]. Now while I have nothing against my sister's boyfriend, I feel like its inappropriate to bring him along. Sam knows that my sister has a boyfriend. That boyfriend was also in the same club, but only for three months. Daniel only attended the meetings because of my sister. Sam and Daniel while friendly, aren't friends. Bottom line is that if Sam wanted Daniel there, I'm certain Sam would have invited him. Most importantly, I'm also certain that the main reason Daniel is going to the gym is not to hang out with Sam but to hang out with my sister.

Can you give me the gist of the text in a nutshell?
<bot>: My sister doesn't think there is anything wrong with inviting her boyfriend along to a hang out with an old friend we haven't seen in a year.