Hi
@goosegoose . To illustrate what I was thinking I will say something a psychologist said who was working with the phobia of fear of flying: with gradiated exposure therapy: everyone got over their fear except one person. He was trying to figure out why it didn't work for him, and the guy said, "Of course, I was running drugs at the time".

So of course it wasn't fear of flying that really was the core fear itself.
When you are talking about incestual abuse there is a lot to process, which might include some of the obvious: parentification, gross boundary violations, sexual and emotional abuse, no protection, etc, and secondary issues of internalized shame, self blame, blame of the perpetrator, blame of those who didn't protect,, grief, including grief from decisions made because of the abuse/ relationship, enmeshment, loss of identity, inappropriate identity, trust, space violations, and much more. If there were adults who did not abuse, it is less likely I would think adults in general are the cause as much as expectation of physical and emotional connection, and what it implies (harm, +/or enmeshment). A relationship with a spouse or SO for example becomes a family dynamic of sorts.
So, I wouldn't (just saying for me, personally) worry as much about how it relates to intimacy yet, as that is a bit cart before the horse. (Such as identifying a hand at the back of your shoulder as intimate; by most definitions it wouldn't really be. Though right now it might feel like it.) The 1st thing would be to work on acknowledging the wound, grieving it, redefining yourself, then learning what is a healthy relationship, then getting used to and enjoying others' presence, then developing relationships and a level of comfort in basic interaction. Of course, this is more complicated if you are already in a relationship simply because I don't think you can have 'corrective experiences' until you have processed what is influencing you in the 1st place (or it simply becomes a re-enactment). Plus you may have to deal with the off-shoots of a life lived behind a shadow: depression, situational anxiety, anxiety in general, hopelessness, despair and a variety of adaptive or maladaptive behaviours to cope with it You can also look at your patterns of attachment (though variable and malleable), your core beliefs, your attitudes towards men/ women, your idea of what constitutes a relationship, your expectations, and your thoughts on what you think others' expectations are. And cultivating being able to see the person in front of you for who they are, not as an embodiment of someone else. And then there's ptsd.
JMHO. Does that make sense?
Also, it's very common to be able to write anonymously more freely. It is just a way to avoid (though it feels like it isn't). The goal of therapy is to get better, so laying your cards on the table is the fastest and most effective way to do it. Shame and self-recrimination can hold you back, because it can't be processed if it can't be admitted. (I think that's the concept of being as sick as our sickest secrets). But that shame is far less lethal than carrying it around, trying to act as though it's not influencing anything, and having it influence everything. False evidence appearing real here could be the shame and discomfort of disclosure is going to result in (x, y and z), and somehow that is worse than having it destroy your life and critically impact your ability to connect or accept or sustain or contribute to relationships in the future. i.e. the fear that disclosure is much more damaging than prudent, confidential disclosure and working on your trauma in a structured therapeutic environment with the goal of overcoming and not having it dictate to a great degree your life choices.
Hope that is helpful in some way.