Wow!
Profile pics will certainly make it much easier to identify your "contacts" much faster.
Remembering the girls names and their corresponding looks is very hard.
I like that it is kept in low res pixel art - so it doesen't distract from the written fiction!
Are your doing the pixel art, have you hired someone or is it procedurally generated?
(Ps.: wonder if there are text game purists that do not want graphics at all?)
The art is all created by me using GIMP, so I can't make any promises regarding the quality! Each of the portrait components, such as the face shapes, hairstyles, eye shapes etc are all stored within the game separately, such that the game can pick the right parts for the girl in question, colourise them and create the complete portrait images as and when needed.