My mans it's obvious you either don't have a father figure or any OG's in your life. You have yet to see the faults in your ways and think you have the answer for everything. So before I have to incite violence on ya little *** I'm going to try again.
At the end of the day you are going to do what you want, but what's troublesome is the lack of respect and courtesy you've shown to both females in your OP. I don't care when you told the female you are dating that you going, you still made the decision without telling her. You didn't know how she would react, but had already justified it by saying she's not my girlfriend and I can still do what I want until that time comes. If you just wanted personal time to by yourself, why not just be open, courteous and respectful to her thoughts and feelings as well.
It really doesn't matter if your best friend said out of mind out of sight, it still doesn't justify. You aren't the only one going on the trip, what if her ex or the other girls mention it to her, or talk to their mutual friends and it gets back to your friend? How are you going to "eurostep" around that explanation, "Well you said not to mention it so I didn't want to hurt your feelings..." Again your friend needs the courtesy and respect from her best friend as well because I don't know if a vacation is worth a damaged friendship. Selfnesses is key to friendships and relationships, and even more of an essential key to happiness and fulliment. I hope you get what you are eventually looking for.
