There can be many reasons why a guy loves watching his wife fuck other guys. For example, many people, both male and female, like watching porn. So, watching his wife fucking is similar to that. It is voyeuristic. Watching is enjoyable. Another possible reason is submission. Watching somebody else fucking his wife may be a form of submission for him. Still another possible reason might be experiencing the adventure, the taboo nature of it. For some, it is exhilarating simply for this reason. Another reason is acknowledging inadequate size or technique, as cuckso discussed above, and wanting the wife to experience sex at a higher level than the husband could ever provide. Perhaps another reason is the excitement of "cheating." Cheating with the husband watching may not be considered by some as "cheating" in a pure sense, but in her mind, and his, it may be that the act of cheating is exciting and arousing. And yet another reason is just the need for variety. I know people in "open" relationships just for that reason. That may or may not lead to watching, but it certainly can be
Another possible reason is submission. Watching somebody else fucking his wife may be a form of submission for him.
Still another possible reason might be experiencing the adventure, the taboo nature of it. For some, it is exhilarating simply for this reason.
Another reason is acknowledging inadequate size or technique, as cuckso discussed above, and wanting the wife to experience sex at a higher level than the husband could ever provide.
Perhaps another reason is the excitement of "cheating." Cheating with the husband watching may not be considered by some as "cheating" in a pure sense, but in her mind, and his, it may be that the act of cheating is exciting and arousing.
And yet another reason is just the need for variety. I know people in "open" relationships just for that reason. That may or may not lead to watching, but it certainly can be