Crazy vacation! This only happens to me!

It wasn't planned that way when the three of us went on a weekend trip at the weekend went to Lake Garda. My best friend, her fiancé and of course me. At first everything was great until her boyfriend kept sexting me up. The following day he came to my room unannounced and wanted me to put on my girlfriend's fuck bodysuit and he wanted to fuck me in it...at first I didn't want to, but when I saw his hard cock, I started and pulled it Body and you ultra slutty high heels and sucked. We could see my girlfriend at the pool because we fucked right at the balcony door and window, it was really very daring, but also horny. Should I convince her to have a threesome?