Tbh, I'm somewhat in line with your word "gay adjacent".
According to my observation, quite a few ppl actually have somewhat fluid romantic orientation.
They appear to be predominantly straight in most time (thus are likely assume themselves to be simply straight), but can become somewhat attracted by the same gender in some or certain situations (that arouse their some levelled attraction to the certain same-gendered individuals).
As I argued in #12,
@ashbabe410 's BF & his brother & friends may not be completely straight. Their some levelled attraction to the certain same-gendered ppl may just be aroused in the certain situations, which prototypically include the one of her BF getting tickled.
On the other hand, such a fluid of romantic attraction may not be that abnormal.
Just on this site, I've also found that some men who claimed to be straight also would like to tickle certain same-gendered individual(s), which shows the certain situation that their interest in the certain same-gendered individual(s).