No, no, my friend. Two separate entities would mean Christ had a human soul in addition to having His eternal divine soul. That would be two separate entities. Which would be wrong. See, in order for Christ to be tempted beyond His divinity, He would have to have another mind (i.e. a human mind) that would run contrary to His divine eternal mind.
Actually, Jesus was 100% God in the fact that His divine essence or being and divine attributes had never changed. The second person of the Godhead had not changed in any way within the form or being of Christ's Spirit. Christ merely suppressed His divine attribute of Omniscience (Whereby He was like a man in not knowing certain things). However, Christ's Omniscience was never removed from His being. The Eternal Word merely suppressed that ability occasionally and at other times, Christ appeared to have accessed that ability or trusted in the Father to reveal things to Him by His power or the power of the Spirit. Jesus was also 100% fully human. He had the flesh of Adam so as to pay the price for our sins by taking those sins within his body and then dying upon the cross. Jesus was 100% human in the fact that He had flesh, bones, and blood. Jesus appeared to be human in the fact that He did all the things a human did - But yet living righteously and perfectly because Christ is God Almighty in the flesh. Jesus appeared to not know things like a man (Because He suppressed His divine attribute of Omniscience), and Jesus did not appear in several different places at one time. His body as a man was confined to one point in space time. So the physical body of Jesus was like a real man (Which would mean His physical body was not Omnipresent). Jesus did not enforce ask the Father so as to to take His power or glory and force it upon others (i.e. His Omnipotence). Jesus body was not divine flesh. Jesus body was of the flesh of Adam like our flesh so as to be our substitute. 100% human to accomplish the task at hand.
Jesus was also human in the fact that He faced direct temptations by sinful people. God was never directly tempted in this way before until the Word was made flesh. But the temptations were only external or one way on the part of the one tempting Christ. Christ was grieved in His Spirit by evil men's temptations. Christ could see men having given into their temptation. Something Christ could not have ever experienced personally. But was tempted in all points externally by evil men and knows the pain involved when confronted with such evil. It does not mean Christ struggled with that evil Himself, but the fact that He was in our place or shoes by being in the flesh of the man and facing the temptation directly (As a man), He can relate and comfort those who are tempted. For Christ can see the struggle that humans can go thru personally because Jesus could at many times read people's mind and sense their feelings and hearts. Christ was still 100% God. His Holy nature would not allow Him to be consider in doing evil (Which is a prerequisite for being tempted).
In other words, you believe Jesus who was without sin had the potential to do sin or evil in some way but He simply chose not to do sin and evil. Tell me. Where did this potential to do sin or evil come from within Christ?