Q: " am i wrong to think that i cannot get over the fact that he's engaging in sexual talk and maybe physically i cannot prove it because he hides everything and he's more like a con artist."
A: Thinking that you can't rather than you won't be able to get over the fact is unhealthy. How you feel largely depends on your internal dialog (what you tell yourself, how much time you spend thinking/ruminating about it and if you accept those mental statements as true)
The good news is that with professional assistance you can learn how to manage these self defeating and sabotaging thoughts and work through this issue. Of course, this does not imply that you should trust him blindly. The two of you can talk about what had caused these sort of messages to be exchanged on both ends. There must be factors that had led to it over time.
You've shared that you are dealing with a low libido. That is not an indication that you do not love him. Low libido can be caused by different things from depressed mood, medication, hormonal changes to painful intercourse or traits of asexuality.
If you believe that on your end this had been the primary catalyst behind this situations, you could work with a sexologist. They are trained clinicians and can address variety of other issues with you. At least, you'd get some objective feedback and the tools you can use to move forward.