I have never had many gentleman friends. Boyfriends, boy-friends, acquaintances,... straight or otherwise. All the more I cherish them. I don't show it of course; pretentiously assuming that initiating a date or meet-up is enough compliment for the rational sex.
Whenever it presumed or insinuated that I have ulterior motives (true or not) I panick a little, fearing that I might miss out on company I am fond of. And even worse when the silent accusations come in name of an unknown spouse/sex partner/ girlfriend... Because it is a threat I can defend against.
Therefor dear gender comrades, when your 'man' meets up with a lady friend, assume she is a 'friend' and no more. It displeases me most seriously to lose friends over female jealousy.