Let $G$ be a connected graph on at least 3 vertices in which the vertex $v$ has only one neighbor, namely $w$. Let $(X_t)_{t \ge 0}$ be a simple random walk on $G$, where $X_t$ is the current vertex at time $t$. Show
$E_vT_w \ne E_wT_v$
where $T_x=\min\limits_{t \ge 0} \{X_t=x\}$ is the hitting time of vertex $x$ and $E_xT_y=E(T_y|X_0=x)$.
I've attempted the following, but without success.
Starting from $v$, the walk must do it first step to $w$. Hence $E_vT_w=1$. Let $n$ be the number of vertices connected to $w$. By conditioning on the first step
$E_wT_v=E_w(T_v|X_1=v){1 \over n} + {1 \over n}\sum\limits_{x \ne \{v,w\}}E_w(T_v|X_1=x).$
Using the Markov property of the walk and the fact that $E_w(T_v|X_1=v)=1$
E_wT_v={1 \over n} + {1 \over n}\sum\limits_{x \ne \{v,w\}}E_x(T_v).
I can't go further.
This is exercise 10.3 from Markov Chains and Mixing Times, 2009, Levin, Perez, Wilmer.