Hi,

I decided to keep track of them "getting busy".  //I am not typing on PC, so the formatting is lacking. I might correct it later.//

Rule 1: only the 1st instance of highest "level" gets listed with EP No. (chronology doesn't matter - just series flow).

Rule 2: M > C > T > F > I

(M)aking out - doesn't have to lead to s*x, can be only kissing or necking (sound included); what is important: it's on screen.
(C)ockblocked - they were both trying to "get together/hook up" but they were stoped by 3rd party *cough*Ray*cough*.
(T)ried - one person was making unsuccessful (and unwanted) pass at the other one.
(F)lirting - self-explanatory.
(I)mplied - nothing happened on screen but we were told about it.

Table in picture form: 

Table in text form:

Let me know if there are any mistakes (preferably EP + Minute, so that I can check and correct :) ).