Seems to me, the underlying problem is not the behavior of your wife, but your insecurities and lack of belief in yourself to the extent that you could actually be the one your wife chose - even though she has proven this by marrying you.

The first question that comes to mind for me is that since you've been married only 2 months, how long have you been together with your wife prior to your marriage? It sounds like there wasn't much time to build a lot of trust and understanding between you two so I am curious if you married quickly.

Having the opposite sex friends is completely normal and acceptable. But for you, your insecurities are coming into play and I believe no matter how this happened, if she has male friends you know of she talks to in any manner it would bring up the same insecurities in you.

I think that getting a therapist for yourself is very important to deal with the reasons you don't feel like you're your wife's one and only.. why maybe you don't feel adequate or something but also couples therapy might help so that your wife starts to understand where this is coming from and you can better work together to remedy this.

Mind you from what you've said I see no evidence of your wife being unfaithful, nor do I feel she is responsible for your thoughts and fears, although I do think she could try to be more supportive and understanding of where you're coming from.