Sexual intercourse with one woman a couple of time and flirty/sexually sexting with a couple of others but he was apologetic and was very sorry.
I'm a first things first kinda person.
Your Spiritual status states "UNSURE". This is by FAAAR and away your most immediate problem.
Should, God forbid you die today while still being UNSURE, you would be lost eternally. So let's get that taken care of first.
THE Gospel unto Salvation:
God wrapped Himself in human flesh in the form of His Son, Jesus the Messiah. Conceived by the Holy Spirit, born of a virgin. He suffered, was crucified, and died to pay OUR sin debt. He was raised to life from the grave to prove He had defeated death. If you confess Jesus as Lord, and believe in your heart that His Father resurrected Him to Life on the 3rd day, you WILL be saved. You will be filled, and sealed with the Holy Spirit, who will empower ALL to turn from their sins. The sin of adultery, lying, stealing, homosexuality, gossip, slander, drunkenness, covetousness, etc... And most importantly the sin of DEAD works, or a moral life in an attempt to EARN Salvation. He will also equip you to love like He did and do good works for HIS Glory.