It's impossible to definitively say whether V has a crush on Jennie based solely on available information; however, they are rumored to be dating.
Understanding the Rumors
The main source of information regarding a potential relationship between V (of BTS) and Jennie (of Blackpink) comes from rumors. As noted by a reference, V and Jennie are rumoured to be dating since years. This doesn't confirm a crush, but it does indicate a romantic connection being speculated.
Why a Definitive Answer is Impossible
Without explicit confirmation from V and Jennie themselves, or undeniable photographic or video evidence, any answer about a "crush" is purely speculative. Rumors are often based on circumstantial evidence or unconfirmed reports, which can be unreliable.
Summary
While rumors suggest a romantic involvement between V and Jennie, it's impossible to confirm whether V has a crush on Jennie. The rumours of their relationship, dating back years, are the only lead on whether V has a crush on Jennie.
