Along with any of the following:
Bacterial
Syphilis (Treponema pallidum)
Gonorrhea (Neisseria gonorrhoeae)
Chlamydia infection (Chlamydia trachomatis)
Chancroid (Haemophilus ducreyi)
Donovanosis (Granuloma inguinale or Calymmatobacterium granulomatis)
Lymphogranuloma venereum /LGV (Chlamydia trachomatis serotypes L1, L2, L3. See Chlamydia)
Non-gonococcal urethritis /NGU (Ureaplasma urealyticum or Mycoplasma hominis)
Viral
AIDS (Human Immunodeficiency Virus /HIV)
Herpes /HSV (Herpes simplex virus)
Human papillomavirus
Certain strains of HPV cause genital warts
Certain strains of HPV cause cervical dysplasias which can lead to cervical cancer
Cytomegalovirus
Hepatitis (Hepatitis A and Hepatitis E are transmitted via the fæcal-oral route, not sexually; Hepatitis C is probably not sexually transmittable)
Hepatitis B
Hepatitis D
Molluscum contagiosum
Parasites
Pubic lice (Phthirius pubis)
Scabies (Sarcoptes scabiei)
"I was in a store the other day and I watched a young girl trying on clothes". Pervert.
Your post reminds me that I'm glad I'm married and we're monogamous.