I think that you ladies have a lot to add, too. The guys can talk about finances and addictiveness. I doubt if many can talk about whether it is better for a first time to be with a provider or a girlfriend, and of course none of us have had both experiences. I tend to agree with their comments on finances so I will not repeat them, but maybe the OP has a trust fund or otherwise can afford it.
Elizabeth: Even though your website indicates that you only see men over 35 (in line with many of the most-highly rated providers), you could give this guy or any other virgins or near-virgins that stumble across this thread some sense as to why that is your policy, and what you think he should do. Have you ever had a first-timer and what advice would you give based on that experience?
My two cents worth: I am not sure if it is better to have your first time with an amateur or an escort. I think an experienced girlfriend would be best (how I lost it), but an escort might be preferable to a bar pickup and hookup with a near stranger (probably safer too). Two virgins together sounds sweet, but those who have reported on the experience make it sound somewhere between comic and pathetic as often as not. As a 25-year-old, presumably the likely amateur dates for someone the OP's age are less likely to be virgins themselves. I would encourage him to get taught by someone with whom there is some real affection rather than just a good GFE provider (sweet as she might be). As to whether seeing a provider ruins you for real affectionate sex with a future partner; I doubt it, but I wouldn't know. I lost my virginity in a very warmly remembered experience more than a decade before I saw my first escort.
Best of luck vkint88, and hopefully some of the well regarded ladies will weigh in with their views.