"It has happened severally that girls who are tripping for me never last and soon lose interest."
This is normal, and expected. A girl's interest in you is usually time-limited prior to you sleeping with her, and especially if she has put out signals that she's interested in you (as this girl sounds like she has), if you don't take advantage quickly she will judge you as not man enough to take it and write you off.
This is normal, and expected. A girl's interest in you is usually time-limited prior to you sleeping with her, and especially if she has put out signals that she's interested in you (as this girl sounds like she has), if you don't take advantage quickly she will judge you as not man enough to take it and write you off.