I think that there can be some very loyal younger girls but in general it seems like most people in this world have lost their respect for other people, their loyalty and their true friendship.
I would say around 25 to 36. Honestly If I talk to a guy on CS and he was 25 or older and his profile says looking for 18-whatever I probably wouldn't talk to him.
If you meet a lady who wants you pay for everything then don't waste your time, move on. There are many out there who would rather have respect for her man and their relationship by being a partner instead of a 'dependent'
RE: age and loyalty
I think that there can be some very loyal younger girls but in general it seems like most people in this world have lost their respect for other people, their loyalty and their true friendship.