Porn and arousal/Orgasm

Hello I am a 28 year old woman and I seem to get very aroused from watching multiple porn videos (about 4) and I get really wet and my clit gets erect then I masturbate until I orgasm. My problem is I don’t get that aroused with my boyfriend and I don’t orgasm with him. I literally only orgasm by watching lesbian or female masturbation porn. Am I bi-sexual and more turned on by looking at women or do I need just longer and more foreplay with my partner? Or something else? Please HELP! Thank you. ❤️