1. Bring up a recent event: Mention something interesting that recently happened in the news or your local area. This will give you both a chance to discuss your thoughts and opinions about the event, and it is likely to keep the conversation engaging.

2. Introduce a mutual interest: If you know about any mutual interests between you and the guy, bring it up to rekindle the conversation. This can range from hobbies, favorite movies, music, or even sports. Sharing common interests makes it easier for both parties to feel comfortable and excited about talking.

3. Ask open-ended questions: Rather than asking questions that can be answered by a simple “yes” or “no,” use open-ended questions that provoke more thought and elaboration. For example, instead of asking if he likes a specific movie, ask him what he found most intriguing about it.

4. Share an interesting story: Telling an engaging story is an excellent way to grab someone’s attention. The story could be about an experience that relates to the topic of conversation or just something fun and exciting that happened recently.

5. Compliment them: Giving a genuine compliment can help break the ice in a conversation by making the guy feel good about himself and appreciated by you. This will also create positive vibes in the conversation, encouraging him to open up more.

6. Introduce new topics: When the conversation starts to lag, introduce a new topic that you feel would be of interest to both of you – this can re-spark the enthusiasm for discussion.

7. Be playful and use humor: Playful banter and humor can be a great way to get a guy engaged in conversation once again. Keep things light-hearted and fun so that both parties can enjoy themselves while talking.

8. Seek his opinion on something: Asking for his opinion on a specific topic will make him feel valued in the conversation and give you fresh material for discussion. This can be especially helpful if it revolves around an interest that he is knowledgeable or passionate about.

9. Share a personal experience: Sharing a personal experience can help break down barriers and even bring the two of you closer together. It creates a sense of vulnerability and trust, which can encourage him to open up more during conversation.

10. Show genuine interest: Display that you are truly engaged in the conversation by actively listening, asking questions, and making eye contact. This will signal to the guy that you genuinely care about what he is saying and want to continue the conversation.

11. Suggest an activity: If all else fails, suggest going out for a coffee or another casual activity to keep the conversation going face to-face. Sometimes shifting the environment can be useful in reviving a stalled conversation.

In conclusion, restarting a conversation with a guy might seem daunting at first, but as long as you approach it with openness, confidence, and some of these strategies in mind, re-engaging in meaningful conversations will not only become easier but also more enjoyable for both parties.