My boyfriend went to get tested for std and he came positive for chlamydia. if he got treated can it come back?

Yes: It is a sexually transmitted disease. He can get it from any sexual partner. You have to be treated, as well as anyone else he is having sex with.

Recurrent chlamydia: Chlamydia can come back after successful treatment because the body does not build up immunity. Chlamydia treatment (antibiotics) are usually quite successful so recurrence suggests re-infection. Same thing is true for gonorrhea and syphilis which can be successfully treated and reacquired. Herpes and HIV are present for life after initial infection.

Yes, it may...: Despite high success in treating chlamydia infection, it never comes in 100%. Besides, beware up to 45% of chlamydia-infected patients have no its related symptoms. To prevent recurrence or reinfection, follow due diligence and vigilance to practice safe sex. More? Seek counseling.