53m married 32 years to my wonderful wife 52f. We experimented with meeting other couples and it worked out fine for her. So far we’ve met 5 couples and always had some fun but mostly the wife got the most pleasurable experiences. I never realized how small my penis is, especially after meeting these 5 guys. I’m definitely not hung at 5.5L 4.5G but the other guys were like pornstars, ranging from 7 to 9.5 with girths from 5.5 to 6.75. I’ve never heard her scream and orgasm so loud and watching her shake and writhe in pleasure with her toes spasming and spreading. Actually watching her cum really turns me on but the problem is 4 out of the 5 wives wants nothing to do with my penis, 1 loves me eating her out the whole time her husband lies next to us fucking my wife. I’ve never been into humiliation before but these 5 women can really put me down, suddenly I’m turned on by it. They like to watch me jerk off my “puny” cock as they lick or play with my nipples. The problem is I only can cum with one of the other wives and can’t cum with mine. It seems we have to have a couple over almost weekly for us to orgasm. What should I do?