You may not appreciate this answer, but I hope you seriously consider my words.
Select your partner well. That's what you need to focus on at this point. You have no ability to fully control how a first-time experience will play. You're addressing a high-stress, hormonal-charged, life-changing event. Even someone with no anxiety issues, and no PMO issues, could face challenges during their first serious intimate encounter. Compounding this, you're a person who 1. has a PMO problem of some kind, 2. has an anxiety issue of some kind.
Someone with an addiction AND an anxiety problem must be very careful with his choice of partner. You need someone understanding, and stable, enough to handle any issues that might arise. If you receive any rejection/anger from your future partner, that's a huge red flag. Communicate clearly, and if you feel the need to conceal your issues due to your partners' negative reaction you should run.
Consider an alcoholic with social anxiety learning to date while attending AA. He'd need to find a supportive woman who understood his panic in social circumstances, and his anxiety around alcohol use. If he received judgement or anger, we'd all recommend he seek a new partner ASAP before he suffered a relapse or deepening of his mental issues.
This isn't purely predictive. You may be fine, you may need to spend some time working through issues with a future partner, but if you don't choose an understanding, stable, and loving woman you could end up with deepened PMO, and anxiety, issues.