It's probably part of the diagnosis. I also think that, there's an element of self-destructiveness to it, my-self. So, if you eliminate that (the attention & the thrill...) perhaps some of that goes away as well --the excitement in "intellectually cheating," or being unfaithful on some level: however big or small you'd care to make it is up to you (& in part, He as well; as in the bf!). ; ) But, all is not lost... You've recognized it: so, now it's just up to you on how you'd wish to deal with it. For example, if your bf knew - & was cool - then what would you do? I'd imagine he wouldn't be overly enthusiastic about this, but only you would know for sure / or best! Again, it all comes back to - do you like this guy you're texting better? (In other words, would you do a trade / swap -- upgrade if you could. . . at the snap of a..?) Then you might want to consider the steps necessary to undertake that process. Otherwise, maybe this is something a therapist could address (or a good friend you can trust?). Now me, I'm weird, and I don't know how many would fall into this category; but if I had a gf... I'd almost prefer she just cheated & instantly regretted it (than engaged in a lengthy verbal intimate dialogue of deep substance that derived or gave her great infinite pleasure: you know, the kind that I could not provide!
). . . Anyway! I wish you well with whatever you decide.