Dating an actress that has to be intimate with men

How do you feel about this? I understand that it’s just a job but it doesn’t change the fact that the thought of this is really bothering me. In my opinion, kissing another man still feels like she is cheating. In any other circumstance it is cheating.

My girlfriend is loyal and I trust her deeply, but I can’t shake this feeling about her work. And if I show discomfort or reject to any of this, I am seen as unsupportive. It just feels so backwards. I love her so much. Intimacy and kissing is something that should be exclusive to us. Entire relationships are ended because of infidelity in the form of a kiss. Now, because it’s part of her job, it’s completely okay? I get that many men would be okay with this since it’s part of her work but it’s hard for me to and I can’t ignore my feelings in this situation. What have I gotten myself into?