Ref. No. 39/1065
In the name of Allah the most gracious the most merciful
The answer to your question is as follows:
Ghusl doesn’t become invalid due to mere sensation without discharge of mani. If mani gets discharged then only ghusl becomes invalid. But when there was no virginal discharge at all, your wudu is still valid though it is better to repeat the wudu. In your case mentioned above, ghusl is not wajib on you due to mere feeling without any kind of discharge.
And Allah knows best
Darul Uloom Waqf Deoband