As a guy, you’d be a total idiot to agree. Single guy on a date with two girls is definitely going to make a fool out of himself and have a terrible evening. Call me sexist, blame social whatnotever for it but it’s as sure as the night is dark. These two have known each other and longer than you so you’re the outsider and there’s that unspoken, inevirtable rivality between you and her best friend. No fucking change. BTW, I’d wonder what people might say if gender roles were reversed here. Lol… “I gotta bring my buddy. For safety.”