So you are essentially paying a woman to give you attention.
Look bro, there is no harm physically to yourself or anyone else from buying a cute girl clothes, but you must ask youself what this is doing to your mind.
You are paying for female attention. This means that she doesn't see you as worth talking to unless you buy her things. In other words, she is taking advantage of your loneliness to extract money from you. You allow this to happen and I don't blame you, but you'll never dig yourself out of the hole you are evidently in by paying girls to pretend to want to talk to you. deep down you will always know the truth,. You cannot fool the subconscious. Better yourself to the point you are able to get a girlfriend - its alot easier than you would expect, though it is still hard. But the reward is far sweeter - a woman that wants to be with you. fuck you, and talk to you because she genuinely loves you.
Thanks for coming to my ted talk. godspeed.