I was going to suggest that you consider switching out of a coed college so that you won’t be around boys and the temptation won’t exist.
However, you now mention that you will be meeting this boy soon, but it’s not a shidduch. I am wondering what that means. How did this boy enter your life if you haven’t met him yet?
I definitely think you need to get to seminary right away. What is happening with your Midreshet Rachayl plans?