In this scenario, it could signify one of two things for me. Either the person feels defensive around you or is displaying a protective attitude. The protective aspect tends to arise more often when the feelings in question belong to a man. Men often exhibit a strong sense of protection towards someone they have feelings for, embodying a masculine essence offering security to the feminine essence.
In my interpretation, the 10 of Wands signifies perseverance, depicting someone persisting despite the weight of their burdens. On the other hand, the 9 of Wands represents someone standing their ground. They've turned to face their adversary, ready and willing to fight if necessary. Often, just the confidence displayed is enough to deter any potential threats. What are your thoughts on this?