Most Helpful Guy
If you are framing it in a way that sets up an open relationship or a polyamorous situation, then that would be fine. A guy wired for monogamy, that is just looking for an exclusive, monogamous relationship, is probably going to be confused by that kind of thought pattern and find it alarming.
People wired for monogamy have a very hard time understanding brains that can compartmentalize like that. They tend to assume it is because of a lack of care when it is often because of an actual desire to care unconditionally.
So... the answer will depend on the guy.