The OP is basically asking one of the core questions about sexual identity; "How do my actions define my sexuality?"
There are a lot of people who hold that there are certain black or white actions that make a person 'gay' or 'bisexual' and regardless of what the individual thinks, they now can be placed in the box with the correct label. What this side of opinion comes down to is that your sexuality is defined by your actions.
There are a lot of people that hold that sexiality is fluid. That one can be hetrosexual, homosexual. bisexual, or even the newly defined 'queer' that has taken on the meaning of being sexually attract ted to people based on non-gender reasons entirely, which effectively means that gender of partner is not something one defines themselves by entirely, removing the boxes of hero/homo entirely.
There is also the interesting factor that paraphilia can be gender independent (Meaning that the gender of the actor, or acted upon is meaningless to the paraphilia holder, and the sexual arousal comes from the action or object, not the actors thus creating a 'queer' state for the paraphilia's holder when they operate within it and it alone) Simply put, a person can identify sexually one way, and have a different or wider identification when operating in their paraphilia.
But what does it all mean?
It means that what your sexuality is, will be defined by what view you hold.
So OP, what does getting tickled by a homosexual-identified male mean about your sexuality?
If you think that tickling is a sexual activity, and that by engaging in a sexual activity with a same-gender individual you are committing a homosexual act, then you are homosexual or bi-sexual.
If you see tickling as a 'queer' realm with regards to your sexuality, then your orientation remains whatever you see it as now.
And so forth.
What you are is defined by the views you hold. And how the paraphilia is functioning with regard to gender for you.
The one thing that can be said is that no one outside of your head can answer this question. They can only indicate possible states, or map their own position for sexual identification onto your actions and claim that is what you are also.
Good luck.
Myriads
